Hi, For reasons beyond my control, one of the hosts we need to relay to is occasionally dropping out of dns. We relay to it based on an ldap map which returns:
relay:[office365relay.clarku.edu] That host is a CNAME for an external vendor. It's not hard to guess which one. When it drops out, the message bounces: Jan 8 13:50:28 mothra.clarku.edu postfix/smtp[27291]: E1614684CCD: to=<u...@clarku.edu>, relay=none, delay=0.18, delays=0.06/0.03/0.1/0, dsn=5.4.4, status=bounced (Host or domain name not found. Name service error for name=office365relay.clarku.edu type=A: Host not found) I'd prefer it to defer. I'm not sure why it's not deferring - is it the relay: line, or the [] enclosure, or something else? Thanks for your time, Aaron --- Aaron Bennett Manager of Systems Administration Clark University ITS W:508.793.7315
