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Errors when sending email via SMG from Exchange

  • 1.  Errors when sending email via SMG from Exchange

    Posted May 24, 2023 09:22 AM

    When Exchange (from Outlook) is sending emails via SMG i have errors in SMG "Abort message (message time out)". Problem was reported to Broadcom Support and after looking at packet capture they found that Exchange send data packet to SMG, SMG sends ACK to Exchange, SMG sends ACK with TCP widow update to Exchange, five minutes after most recent ACK no other packets have been received form Exchang and SMG time out the sesion. 
    In Exchange transport service logs I have 

    2023-05-18T20:18:41.277Z,SMG,08DB53CAAC00F8FF,21,192.168.45.35:49461,192.168.45.41:25,*,,"HandleError has encountered a suspicious connection reset from a remote, non-mailbox transport server."

    From Exchange Queue 

    [{LED=450 4.4.318 Connection was closed abruptly (SuspiciousRemoteServerError)} Exchange 2016

    Emails sended via OWA are working fine



  • 2.  RE: Errors when sending email via SMG from Exchange

    Posted May 24, 2023 09:24 AM
    Certificate issues. ?




  • 3.  RE: Errors when sending email via SMG from Exchange

    Posted May 24, 2023 09:34 AM

    After 4 atempts message is sent. To low max connection in Exchange connector?




  • 4.  RE: Errors when sending email via SMG from Exchange

    Posted May 24, 2023 09:43 AM
    If smg is closing the connection, then it’s smg. I ask again. Tls cert????




  • 5.  RE: Errors when sending email via SMG from Exchange

    Broadcom Employee
    Posted May 24, 2023 09:50 AM

    I just said that it wasn't an action from SMG, that's not what "Abort message (message timed out)" means. There's not enough info to indicate a potential cert related issue, I mentioned that the statements about the packets lacked context. However it's not SMG that is closing the connection. 
    If it were cert related, it wouldn't likely be directly related to the cert. It wasn't a cert failure, which would have specific responses, it was a timeout due to lack of network packet responses to the Messaging Gateway.



    ------------------------------
    ---------------------------------------------
    Support Engineer
    * Integrated Cyber Defense Exchange
    * Messaging Gateway
    * Packet Shaper
    Symantec Enterprise Division
    Broadcom Software
    ------------------------------



  • 6.  RE: Errors when sending email via SMG from Exchange

    Broadcom Employee
    Posted May 24, 2023 09:41 AM

    Sounds like something might be between SMG and Exchange that should be looked at. the "Abort message (message timed out)" specifically means that the Messaging Gateway was communicating with the other server but the network connection was lost (not due to direct action from SMG). Your description of the packet capture lacked context, but in general you said that SMG sent an ACK (meaning it acknowledged Exchanges previous packet) and would generally then be waiting for Exchange's next packet, which never arrived - ending in time out.
    Your Exchange logs seem to indicate that Exchange thought SMG stopped responding. Thus, most likely culprit is something in between.



    ------------------------------
    ---------------------------------------------
    Support Engineer
    * Integrated Cyber Defense Exchange
    * Messaging Gateway
    * Packet Shaper
    Symantec Enterprise Division
    Broadcom Software
    ------------------------------



  • 7.  RE: Errors when sending email via SMG from Exchange

    Posted May 24, 2023 10:19 AM

    Description of pacet capture is from Case 33390143. Exchange and VM are in VLAN, same site maybe sometimes different host. But from OWA mails are working. From transport service logs i se that certificate negotiation using tls 1.2 is succeded 




  • 8.  RE: Errors when sending email via SMG from Exchange

    Posted May 24, 2023 10:39 AM
    The issue is new???
    On May 24, 2023, at 10:18 AM, Tomasz Zielinski via Broadcom <mail@broadcom.com> wrote:

    Description of pacet capture is from Case 33390143. Exchange and VM are in VLAN, same site maybe sometimes different host. But from OWA mails are... -posted to the "Messaging Gateway" community <https: community.broadcom.com=""> Messaging Gateway <https: community.broadcom.com/symantecenterprise/communities/community-home/digestviewer?communitykey="bba1e9dc-0c56-4fb5-9e3d-ef7f0d79b7ee"> Post New Message <broadcom-messaginggateway@connectedcommunity.org> Re: Errors when sending email via SMG from Exchange <https: community.broadcom.com/symantecenterprise/discussion/errors-when-sending-email-via-smg-from-exchange#bm7a5d48ce-a4de-4d38-afbe-01884e1ab3b1=""> Reply to Group <broadcom_messaginggateway_7a5d48ce-a4de-4d38-afbe-01884e1ab3b1@connectedcommunity.org?subject=re: errors="" when="" sending="" email="" via="" smg="" from="" exchange=""> Reply to Sender <https: community.broadcom.com/symantecenterprise/communities/all-discussions/postreply?messagekey="7a5d48ce-a4de-4d38-afbe-01884e1ab3b1&ListKey=c7074c2b-e593-418f-9d9e-0567f9e41e52&SenderKey=81914f51-0b1c-4fcc-a347-01884c9ab40f"> <https: community.broadcom.com/network/members/profile?userkey="81914f51-0b1c-4fcc-a347-01884c9ab40f"> May 24, 2023 10:19 AM Tomasz Zielinski <https: community.broadcom.com/network/members/profile?userkey="81914f51-0b1c-4fcc-a347-01884c9ab40f">
    Description of pacet capture is from Case 33390143. Exchange and VM are in VLAN, same site maybe sometimes different host. But from OWA mails are working. From transport service logs i se that certificate negotiation using tls 1.2 is succeded
    Reply to Group Online <https: community.broadcom.com/symantecenterprise/communities/all-discussions/postreply?messagekey="7a5d48ce-a4de-4d38-afbe-01884e1ab3b1&ListKey=c7074c2b-e593-418f-9d9e-0567f9e41e52"> Reply to Group via Email <broadcom_messaginggateway_7a5d48ce-a4de-4d38-afbe-01884e1ab3b1@connectedcommunity.org?subject=re: errors="" when="" sending="" email="" via="" smg="" from="" exchange=""> View Thread <https: community.broadcom.com/symantecenterprise/discussion/errors-when-sending-email-via-smg-from-exchange#bm7a5d48ce-a4de-4d38-afbe-01884e1ab3b1=""> Recommend <https: community.broadcom.com:443/symantecenterprise/discussion/errors-when-sending-email-via-smg-from-exchange?messagekey="7a5d48ce-a4de-4d38-afbe-01884e1ab3b1&cmd=rate&cmdarg=add#bm7a5d48ce-a4de-4d38-afbe-01884e1ab3b1"> Forward <https: community.broadcom.com/symantecenterprise/communities/all-discussions/forwardmessages?messagekey="7a5d48ce-a4de-4d38-afbe-01884e1ab3b1&ListKey=c7074c2b-e593-418f-9d9e-0567f9e41e52"> Flag as Inappropriate <https: community.broadcom.com/symantecenterprise/discussion/errors-when-sending-email-via-smg-from-exchange?markappropriate="7a5d48ce-a4de-4d38-afbe-01884e1ab3b1#bm7a5d48ce-a4de-4d38-afbe-01884e1ab3b1">


  • 9.  RE: Errors when sending email via SMG from Exchange

    Posted May 24, 2023 04:17 PM

    Nope, SMG is only for inbound mail. I want to enable outgoing mails via SMG and this hapens




  • 10.  RE: Errors when sending email via SMG from Exchange

    Posted May 24, 2023 04:42 PM
    Capture. And pic of errors




  • 11.  RE: Errors when sending email via SMG from Exchange

    Posted May 24, 2023 10:40 AM
    I also didn’t get your packet capture. I will need that as well please.




  • 12.  RE: Errors when sending email via SMG from Exchange

    Broadcom Employee
    Posted May 24, 2023 10:47 AM

    It is absolutely not acceptable for you to ask for a packet capture, or any personal/business data, from someone else. Please refrain from such behavior.



    ------------------------------
    ---------------------------------------------
    Support Engineer
    * Integrated Cyber Defense Exchange
    * Messaging Gateway
    * Packet Shaper
    Symantec Enterprise Division
    Broadcom Software
    ------------------------------



  • 13.  RE: Errors when sending email via SMG from Exchange

    Posted May 24, 2023 10:48 AM
    I am helping




  • 14.  RE: Errors when sending email via SMG from Exchange

    Posted Jun 01, 2023 07:04 AM

    Packet capture was sent to Broadcom Support and they replied with this

    I think that problem is with Exchange receive connector. Email's that i've tracked were using connector with port 2525




  • 15.  RE: Errors when sending email via SMG from Exchange

    Posted Jun 01, 2023 07:07 AM
    Did you put the smg ip in its own connector to test.
    On Jun 1, 2023, at 7:04 AM, Tomasz Zielinski via Broadcom <mail@broadcom.com> wrote:


    this






  • 16.  RE: Errors when sending email via SMG from Exchange

    Posted Jun 07, 2023 07:45 AM

    Yes, when im testing i'm disabling Internet connector and leave only smg connector. When i'm sending emails with only subject name they are delivered. When email has small attachment, problem occurs




  • 17.  RE: Errors when sending email via SMG from Exchange

    Posted Jun 07, 2023 07:47 AM
    Show us both errors: exchange error and smg error please. Pics also help.
    On Jun 7, 2023, at 7:45 AM, Tomasz Zielinski via Broadcom <mail@broadcom.com> wrote:

    Yes, when im testing i'm disabling Internet connector and leave only smg connector. When i'm sending emails with only subject name they are... <https: community.broadcom.com=""> Messaging Gateway <https: community.broadcom.com/symantecenterprise/communities/community-home/digestviewer?communitykey="bba1e9dc-0c56-4fb5-9e3d-ef7f0d79b7ee"> Post New Message <broadcom-messaginggateway@connectedcommunity.org> Re: Errors when sending email via SMG from Exchange <https: community.broadcom.com/symantecenterprise/discussion/errors-when-sending-email-via-smg-from-exchange#bm12acdf46-a129-4899-8165-018895abbee2=""> Reply to Group <broadcom_messaginggateway_12acdf46-a129-4899-8165-018895abbee2@connectedcommunity.org?subject=re: errors="" when="" sending="" email="" via="" smg="" from="" exchange=""> Reply to Sender <https: community.broadcom.com/symantecenterprise/communities/all-discussions/postreply?messagekey="12acdf46-a129-4899-8165-018895abbee2&ListKey=c7074c2b-e593-418f-9d9e-0567f9e41e52&SenderKey=81914f51-0b1c-4fcc-a347-01884c9ab40f"> <https: community.broadcom.com/network/members/profile?userkey="81914f51-0b1c-4fcc-a347-01884c9ab40f"> Jun 7, 2023 7:45 AM Tomasz Zielinski <https: community.broadcom.com/network/members/profile?userkey="81914f51-0b1c-4fcc-a347-01884c9ab40f">
    Yes, when im testing i'm disabling Internet connector and leave only smg connector. When i'm sending emails with only subject name they are delivered. When email has small attachment, problem occurs
    Reply to Group Online <https: community.broadcom.com/symantecenterprise/communities/all-discussions/postreply?messagekey="12acdf46-a129-4899-8165-018895abbee2&ListKey=c7074c2b-e593-418f-9d9e-0567f9e41e52"> Reply to Group via Email <broadcom_messaginggateway_12acdf46-a129-4899-8165-018895abbee2@connectedcommunity.org?subject=re: errors="" when="" sending="" email="" via="" smg="" from="" exchange=""> View Thread <https: community.broadcom.com/symantecenterprise/discussion/errors-when-sending-email-via-smg-from-exchange#bm12acdf46-a129-4899-8165-018895abbee2=""> Recommend <https: community.broadcom.com:443/symantecenterprise/discussion/errors-when-sending-email-via-smg-from-exchange?messagekey="12acdf46-a129-4899-8165-018895abbee2&cmd=rate&cmdarg=add#bm12acdf46-a129-4899-8165-018895abbee2"> Forward <https: community.broadcom.com/symantecenterprise/communities/all-discussions/forwardmessages?messagekey="12acdf46-a129-4899-8165-018895abbee2&ListKey=c7074c2b-e593-418f-9d9e-0567f9e41e52"> Flag as Inappropriate <https: community.broadcom.com/symantecenterprise/discussion/errors-when-sending-email-via-smg-from-exchange?markappropriate="12acdf46-a129-4899-8165-018895abbee2#bm12acdf46-a129-4899-8165-018895abbee2">


  • 18.  RE: Errors when sending email via SMG from Exchange

    Posted Jun 07, 2023 08:03 AM

    They are in first post. Yesterday I also changed log level to debug level but only error i see is "read: SSL_ERROR_WANT_READ"




  • 19.  RE: Errors when sending email via SMG from Exchange

    Posted Jun 07, 2023 08:41 AM
    Tls error
    On Jun 7, 2023, at 8:02 AM, Tomasz Zielinski via Broadcom <mail@broadcom.com> wrote:

    They are in first post. Yesterday I also changed log level to debug level but only error i see is "read: SSL_ERROR_WANT_READ" -posted to the "Messaging Gateway" community <https: community.broadcom.com=""> Messaging Gateway <https: community.broadcom.com/symantecenterprise/communities/community-home/digestviewer?communitykey="bba1e9dc-0c56-4fb5-9e3d-ef7f0d79b7ee"> Post New Message <broadcom-messaginggateway@connectedcommunity.org> Re: Errors when sending email via SMG from Exchange <https: community.broadcom.com/symantecenterprise/discussion/errors-when-sending-email-via-smg-from-exchange#bm43c2689e-42a3-4b72-96b3-018895b3fb3f=""> Reply to Group <broadcom_messaginggateway_43c2689e-42a3-4b72-96b3-018895b3fb3f@connectedcommunity.org?subject=re: errors="" when="" sending="" email="" via="" smg="" from="" exchange=""> Reply to Sender <https: community.broadcom.com/symantecenterprise/communities/all-discussions/postreply?messagekey="43c2689e-42a3-4b72-96b3-018895b3fb3f&ListKey=c7074c2b-e593-418f-9d9e-0567f9e41e52&SenderKey=81914f51-0b1c-4fcc-a347-01884c9ab40f"> <https: community.broadcom.com/network/members/profile?userkey="81914f51-0b1c-4fcc-a347-01884c9ab40f"> Jun 7, 2023 8:03 AM Tomasz Zielinski <https: community.broadcom.com/network/members/profile?userkey="81914f51-0b1c-4fcc-a347-01884c9ab40f">
    They are in first post. Yesterday I also changed log level to debug level but only error i see is "read: SSL_ERROR_WANT_READ"
    Reply to Group Online <https: community.broadcom.com/symantecenterprise/communities/all-discussions/postreply?messagekey="43c2689e-42a3-4b72-96b3-018895b3fb3f&ListKey=c7074c2b-e593-418f-9d9e-0567f9e41e52"> Reply to Group via Email <broadcom_messaginggateway_43c2689e-42a3-4b72-96b3-018895b3fb3f@connectedcommunity.org?subject=re: errors="" when="" sending="" email="" via="" smg="" from="" exchange=""> View Thread <https: community.broadcom.com/symantecenterprise/discussion/errors-when-sending-email-via-smg-from-exchange#bm43c2689e-42a3-4b72-96b3-018895b3fb3f=""> Recommend <https: community.broadcom.com:443/symantecenterprise/discussion/errors-when-sending-email-via-smg-from-exchange?messagekey="43c2689e-42a3-4b72-96b3-018895b3fb3f&cmd=rate&cmdarg=add#bm43c2689e-42a3-4b72-96b3-018895b3fb3f"> Forward <https: community.broadcom.com/symantecenterprise/communities/all-discussions/forwardmessages?messagekey="43c2689e-42a3-4b72-96b3-018895b3fb3f&ListKey=c7074c2b-e593-418f-9d9e-0567f9e41e52"> Flag as Inappropriate <https: community.broadcom.com/symantecenterprise/discussion/errors-when-sending-email-via-smg-from-exchange?markappropriate="43c2689e-42a3-4b72-96b3-018895b3fb3f#bm43c2689e-42a3-4b72-96b3-018895b3fb3f">


  • 20.  RE: Errors when sending email via SMG from Exchange

    Posted Jun 07, 2023 09:59 AM

    But why mails without attachment are delivered?




  • 21.  RE: Errors when sending email via SMG from Exchange

    Broadcom Employee
    Posted Jun 07, 2023 10:16 AM

    I mentioned previously that it appears something is between the Messaging Gateway and your internal mail server. The things you've posted here also suggest that. The error from your exchange server is "HandleError has encountered a suspicious connection reset from a remote, non-mailbox transport server.", the error from Messaging Gateway is that it experienced a timeout waiting for an update from 192.168.45.35. Those are not the same results, the Messaging Gateway did not reset the connection, the 45.35 host did. So, when two different conversations appear to be happening, it tends to be something in the middle that's causing it. It could be a load balancer, a firewall, some other security process, or even potentially a bad cable or switch port.
    At any rate, all that's been posted here is pointing to something other than the Messaging Gateway as the cause. If you have other evidence that the Messaging Gateway may be involved as a cause, feel free to post it or open a case and we will revise, but otherwise you should be investigating the network.



    ------------------------------
    ---------------------------------------------
    Support Engineer
    * Integrated Cyber Defense Exchange
    * Messaging Gateway
    * Packet Shaper
    Symantec Enterprise Division
    Broadcom Software
    ------------------------------



  • 22.  RE: Errors when sending email via SMG from Exchange

    Posted Jun 07, 2023 11:23 AM
    What is the email path of the flow.




  • 23.  RE: Errors when sending email via SMG from Exchange

    Posted Jun 14, 2023 04:44 AM

    Have you checked for IP address conflicts on your LAN? 




  • 24.  RE: Errors when sending email via SMG from Exchange

    Posted Jun 14, 2023 09:21 AM

    There is no IP conflict. Exchange and SMG are in same VXLAN, MTU is 1500, firewall in Exchange is off. Should I run wireshark on Exchange? Alexander, I don't know what You meen by "What is the email path of the flow." It's standard flow from Outlook to Exchange and then via external connector to SMG




  • 25.  RE: Errors when sending email via SMG from Exchange

    Posted Jun 14, 2023 09:22 AM
    U need a packet capture on both ends




  • 26.  RE: Errors when sending email via SMG from Exchange

    Posted Oct 25, 2023 03:46 AM

    On Exchange packet capture I have this




  • 27.  RE: Errors when sending email via SMG from Exchange

    Posted Oct 25, 2023 06:02 AM
    Looks like you are having tls cipher issues. What is in between exchange and smg?




  • 28.  RE: Errors when sending email via SMG from Exchange

    Posted Oct 25, 2023 06:44 AM
    Edited by Tomasz Zielinski Oct 25, 2023 06:47 AM

    Nothing, they are in same vxlan, vxlan is on nsx-v edge gateway. SMG have self signed cert, it was expired but accept tls encryption was not on. Now is on and with new self signed cert




  • 29.  RE: Errors when sending email via SMG from Exchange

    Posted Oct 25, 2023 06:45 AM
    Turn off scanning
    On Oct 25, 2023, at 6:44AM, Tomasz Zielinski via Broadcom <mail@broadcom.com> wrote:

    Nothing, they are in same vxlan, vxlan is on nsx-v edge gateway -posted to the "Messaging Gateway" community <https: community.broadcom.com=""> Messaging Gateway <https: community.broadcom.com/symantecenterprise/communities/community-home/digestviewer?communitykey="bba1e9dc-0c56-4fb5-9e3d-ef7f0d79b7ee"> Post New Message <broadcom-messaginggateway@connectedcommunity.org> Re: Errors when sending email via SMG from Exchange <https: community.broadcom.com/symantecenterprise/discussion/errors-when-sending-email-via-smg-from-exchange#bm4a3f71c3-be37-4fc4-9a2e-018b666ebec3=""> Reply to Group <broadcom_messaginggateway_4a3f71c3-be37-4fc4-9a2e-018b666ebec3@connectedcommunity.org?subject=re: errors="" when="" sending="" email="" via="" smg="" from="" exchange=""> Reply to Sender <https: community.broadcom.com/symantecenterprise/communities/all-discussions/postreply?messagekey="4a3f71c3-be37-4fc4-9a2e-018b666ebec3&ListKey=c7074c2b-e593-418f-9d9e-0567f9e41e52&SenderKey=81914f51-0b1c-4fcc-a347-01884c9ab40f"> <https: community.broadcom.com/network/members/profile?userkey="81914f51-0b1c-4fcc-a347-01884c9ab40f"> Oct 25, 2023 6:44 AM Tomasz Zielinski <https: community.broadcom.com/network/members/profile?userkey="81914f51-0b1c-4fcc-a347-01884c9ab40f">
    Nothing, they are in same vxlan, vxlan is on nsx-v edge gateway
    Reply to Group Online <https: community.broadcom.com/symantecenterprise/communities/all-discussions/postreply?messagekey="4a3f71c3-be37-4fc4-9a2e-018b666ebec3&ListKey=c7074c2b-e593-418f-9d9e-0567f9e41e52"> Reply to Group via Email <broadcom_messaginggateway_4a3f71c3-be37-4fc4-9a2e-018b666ebec3@connectedcommunity.org?subject=re: errors="" when="" sending="" email="" via="" smg="" from="" exchange=""> View Thread <https: community.broadcom.com/symantecenterprise/discussion/errors-when-sending-email-via-smg-from-exchange#bm4a3f71c3-be37-4fc4-9a2e-018b666ebec3=""> Recommend <https: community.broadcom.com:443/symantecenterprise/discussion/errors-when-sending-email-via-smg-from-exchange?messagekey="4a3f71c3-be37-4fc4-9a2e-018b666ebec3&cmd=rate&cmdarg=add#bm4a3f71c3-be37-4fc4-9a2e-018b666ebec3"> Forward <https: community.broadcom.com/symantecenterprise/communities/all-discussions/forwardmessages?messagekey="4a3f71c3-be37-4fc4-9a2e-018b666ebec3&ListKey=c7074c2b-e593-418f-9d9e-0567f9e41e52"> Flag as Inappropriate <https: community.broadcom.com/symantecenterprise/discussion/errors-when-sending-email-via-smg-from-exchange?markappropriate="4a3f71c3-be37-4fc4-9a2e-018b666ebec3#bm4a3f71c3-be37-4fc4-9a2e-018b666ebec3">


  • 30.  RE: Errors when sending email via SMG from Exchange

    Posted Oct 25, 2023 06:54 AM
    Edited by Tomasz Zielinski Oct 25, 2023 06:55 AM

    So mail filtering only for inbound message or disable policy for outbound?




  • 31.  RE: Errors when sending email via SMG from Exchange

    Posted Oct 25, 2023 06:56 AM
    Can you telnet successfully and send telnet emails from both directions?




  • 32.  RE: Errors when sending email via SMG from Exchange

    Posted Oct 25, 2023 09:33 AM

    I can send email via telnet from Exchange to SMG




  • 33.  RE: Errors when sending email via SMG from Exchange

    Posted Oct 25, 2023 10:21 AM
    Run tcpdump on smg and netmon exch to get info on both ends
    On Oct 25, 2023, at 9:33AM, Tomasz Zielinski via Broadcom <mail@broadcom.com> wrote:

    I can send email via telnet from Exchange to SMG -posted to the "Messaging Gateway" community <https: community.broadcom.com=""> Messaging Gateway <https: community.broadcom.com/symantecenterprise/communities/community-home/digestviewer?communitykey="bba1e9dc-0c56-4fb5-9e3d-ef7f0d79b7ee"> Post New Message <broadcom-messaginggateway@connectedcommunity.org> Re: Errors when sending email via SMG from Exchange <https: community.broadcom.com/symantecenterprise/discussion/errors-when-sending-email-via-smg-from-exchange#bmb8934a4c-28a1-4558-af6c-018b670932d2=""> Reply to Group <broadcom_messaginggateway_b8934a4c-28a1-4558-af6c-018b670932d2@connectedcommunity.org?subject=re: errors="" when="" sending="" email="" via="" smg="" from="" exchange=""> Reply to Sender <https: community.broadcom.com/symantecenterprise/communities/all-discussions/postreply?messagekey="b8934a4c-28a1-4558-af6c-018b670932d2&ListKey=c7074c2b-e593-418f-9d9e-0567f9e41e52&SenderKey=81914f51-0b1c-4fcc-a347-01884c9ab40f"> <https: community.broadcom.com/network/members/profile?userkey="81914f51-0b1c-4fcc-a347-01884c9ab40f"> Oct 25, 2023 9:33 AM Tomasz Zielinski <https: community.broadcom.com/network/members/profile?userkey="81914f51-0b1c-4fcc-a347-01884c9ab40f">
    I can send email via telnet from Exchange to SMG
    Reply to Group Online <https: community.broadcom.com/symantecenterprise/communities/all-discussions/postreply?messagekey="b8934a4c-28a1-4558-af6c-018b670932d2&ListKey=c7074c2b-e593-418f-9d9e-0567f9e41e52"> Reply to Group via Email <broadcom_messaginggateway_b8934a4c-28a1-4558-af6c-018b670932d2@connectedcommunity.org?subject=re: errors="" when="" sending="" email="" via="" smg="" from="" exchange=""> View Thread <https: community.broadcom.com/symantecenterprise/discussion/errors-when-sending-email-via-smg-from-exchange#bmb8934a4c-28a1-4558-af6c-018b670932d2=""> Recommend <https: community.broadcom.com:443/symantecenterprise/discussion/errors-when-sending-email-via-smg-from-exchange?messagekey="b8934a4c-28a1-4558-af6c-018b670932d2&cmd=rate&cmdarg=add#bmb8934a4c-28a1-4558-af6c-018b670932d2"> Forward <https: community.broadcom.com/symantecenterprise/communities/all-discussions/forwardmessages?messagekey="b8934a4c-28a1-4558-af6c-018b670932d2&ListKey=c7074c2b-e593-418f-9d9e-0567f9e41e52"> Flag as Inappropriate <https: community.broadcom.com/symantecenterprise/discussion/errors-when-sending-email-via-smg-from-exchange?markappropriate="b8934a4c-28a1-4558-af6c-018b670932d2#bmb8934a4c-28a1-4558-af6c-018b670932d2">


  • 34.  RE: Errors when sending email via SMG from Exchange

    Posted Oct 25, 2023 11:40 AM

    Messages that have small size are working. MTU?




  • 35.  RE: Errors when sending email via SMG from Exchange

    Posted Oct 25, 2023 11:59 AM
    No run tcpdump and netmon please




  • 36.  RE: Errors when sending email via SMG from Exchange

    Posted Oct 25, 2023 05:32 PM

    Moved Ex and SMG to same esxi which has newest firmware and mails are working fine via SMG...




  • 37.  RE: Errors when sending email via SMG from Exchange

    Posted Oct 25, 2023 05:34 PM
    Was it your vmx3 nic ?




  • 38.  RE: Errors when sending email via SMG from Exchange

    Posted Oct 26, 2023 02:27 AM

    Yes, there are vmxnet3 nic, one on Ex and two on SMG




  • 39.  RE: Errors when sending email via SMG from Exchange

    Posted Feb 26, 2024 06:49 AM

    I've turned sending emails via SMG at other client and same problem occurs. But when i've migrated Exchange and SMG on same host everything is ok.




  • 40.  RE: Errors when sending email via SMG from Exchange

    Posted Feb 26, 2024 06:50 AM
    Umm. What?