Hello took new IPs and our servers are having trouble sending emails to the Symantec servers, we have used the http://ipremoval.sms.symantec.com/lookup/ ferramenra. However it seems to me that symentec servers are blocking our IP firewall.See the error:
telnet 18.104.22.168 25
Trying 22.214.171.124 ...
telnet: Unable to connect to remote host: Connection timed out
Can you help me?