553 Message Filtered

[Oliver1]

Hi,

I hope you're all well. I'm still having an issue where my client's emails are being filtered by Symantec/MessageLabs.

I've ran their IP through your tool (https://ipremoval.sms.symantec.com/ipr/lookup) and it states "IP 51.141.5.228 does not have any bad reputation".

I've also ran it through other blacklist checks and spam list checkers and everything is coming back clean. This company doesn't send bulk emails, neither do they send emails to 'subscribers'. I've checked their DNS and everything is good, I've ran their SPF/MX through some checkers and it is coming back good.

Their sending IP is: 51.141.5.228

Please could this be looked at as soon as possible? It is limiting them from doing their job.

If you need any more information from me, please let me know. Thanks for your help. Stay safe! 

[Jerry Barnabee]

What is the reject message that you are getting on your server ?

[Oliver1]

Hi Jerry, many thanks for your response. The error in the bounceback is below;

550 5.0.350 Remote server returned an error -> 553 Message filtered. Refer to the Troubleshooting page at;http://www.symanteccloud.com/troubleshooting for more;information. (#5.7.1)

Thanks!

[Jerry Barnabee]

I'm probably not the best person to try and figure this out - but I am willing to at least see if any of my experiences with erroneous email rejects can help.

So I need to know a. few things to see if what I have experienced has any bearing on your situation.

Is your server that actually mail server or do you pass your email to a different server ? 

What is the operating system of your serve,  e.g. ? Centos ver xx - 

Do you use WHM/Cpanel ?

I have never come across this particular reject message .... 

JerryB

[Oliver1]

Hi Jerry,

The client doesn't have an in house mail server, all mail is routed through Office 365, with the correct DMARC/DKIM/SPF Records. Upon googling it looks like it is a common problem and it requires a Symantec/Broadcom/MessageLabs engineer to look at the reason as to why their emails are being filtered/blocked so we can rectify the problem or Symantec/MessageLabs are able whitelist their IP/domain.

Thanks!

[Jerry Barnabee]

That is what I figured - you are dealing with client sent email rejects whereas my problems dealt with my email server getting rejects from other email servers ... rejects that the original sender never gets ....

JerryB

[Oliver1]

I see - thanks for the input anyway Jerry, I appreciate it! Hopefully a Broadcom/Symantec Engineer would be able to help with this one?

[Oliver1]

Hi, is anyone else able to help with this? My client is struggling quite a lot - the majority of their recipients use MessageLabs filtering system.

Also just for reference, we have followed the guides found on Symantec's website to request IP removal from the blacklist by sending emails to various addresses with attachments. We've done this quite a few times over the past few weeks but haven't heard back as of yet.

Any help would be greatly appreciated!

[Oliver1]

Hi, please can someone assist?

[Oliver1]

Hey guys - I'm still having this problem. Please can any one advise?

[Oliver1]

PLEASE can someone at Broadcom/Symantec assist!