We have an exchange 2013 server that is failing a reverse SMTP Banner Check: 220 [Internal IP] ESMTP Smtpd;
I have gone into our exchange receive connector for the internet, "Default frontend servername" and have changed the banner to "220 SMTP OK domain" however running the check or connecting through telnet will only give the original, default banner. I decided to change all of the receive connectors (just in case) but I still only get the default banner. I opened up the protocol smtp receive logs and I see:
date, receive connector, seq ect, 220 SMTP OK domain,
I think I am misunderstanding, but how do I change what is displayed and comply with the reverse banner check?