How to change SMTP Banner, HELO,EHLO Greetings for Zimbra on Zimbra v.8.0.9
Take a Zimbra backup or VM snapshot before doing any changes
Enter the following command to change SMTP Banner:
su – zimbra zmlocalconfig -e postfix_smtpd_banner=”yourmailserver.yourdomain.com”
Then if you want to change HELO/EHLO names, enter:
zmprov mcf zimbraMtaMyHostname yourmailserver.yourdomain.com
If you want to disable adding X-originating (Client’s internal-LAN IP) to email headers:
zmprov mcf zimbraSmtpSendAddOriginatingIP FALSE
Then restart Zimbra Services:
zmcontrol restart