

Sep 7 15:12:53 hostname postfix/dkimmilter/smtpd: NOQUEUE: milter-reject: EHLO from ip6-localhost: 451 4.7.1 Service unavailable - try again later proto=SMTP helo=

Sep 7 15:12:53 hostname postfix/dkimmilter/smtpd: NOQUEUE: milter-reject: CONNECT from ip6-localhost: 451 4.7.1 Service unavailable - try again later proto=SMTP Sep 7 15:12:53 hostname postfix/dkimmilter/smtpd: warning: connect to Milter service inet:localhost:8465: Connection refused Sep 7 15:12:53 hostname postfix/dkimmilter/smtpd: connect from ip6-localhost Sep 7 15:12:53 hostname amavis: (00423-03) Checking: QjJwprJj7WfE ORIGINATING/MYNETS ->

Sep 7 15:12:53 hostname postfix/smtpd: disconnect from Sep 7 15:12:53 hostname postfix/cleanup: 14BA03C35EC: message-id= Sep 7 15:12:53 hostname postfix/smtpd: NOQUEUE: filter: RCPT from : : Sender address triggers FILTER smtp-amavis::10026 from= to= proto=ESMTP helo= Sep 7 15:12:53 hostname postfix/smtpd: connect from This is what happens when I try to email someone. I have redacted some information, like the email addresses, server hostname, and server IP involved. Here's what's going on in the Zimbra logs. This new server does have IPv6, and the old one never had that set up.

I've done some digging in my logs, and some independent Googling, and some people online are saying the issue might be IPv6 related. They were all going into the deferred queue. Everything was going smoothly, until I realized my emails were not being sent. This time around, I freshly installed 8.0.4 and migrated all of my accounts over with imapsync. I am no stranger to Zimbra, and I have had Zimbra running on my old server for over a year. I recently installed a new Zimbra email server on a Ubuntu server hosted at OVH.
