I have a bit of an odd problem and hoped you might be able to offer some assistance or point me in the right direction.
Yesterday, my server was unable to send emails to 3M (u...@mmm.com). The logs shows: "status=deferred (delivery temporarily suspended: connect to mmm.com[192.28.34.26]" When I did a lookup of mmm.com it resolves to 192.28.34.26, however, the MX record for 3M shows: >> Authoritative answers can be found from: mmm.com nameserver = pigseye.mmm.com. mmm.com nameserver = ns.3m.com. 3m.com.inbound15.mxlogic.net internet address = 208.65.144.12 3m.com.inbound15.mxlogic.net internet address = 208.65.144.13 3m.com.inbound15.mxlogic.net internet address = 208.65.145.12 3m.com.inbound15.mxlogic.net internet address = 208.65.145.13 3m.com.inbound15.mxlogicmx.net internet address = 208.65.144.13 3m.com.inbound15.mxlogicmx.net internet address = 208.65.145.12 3m.com.inbound15.mxlogicmx.net internet address = 208.65.144.12 << Does anyone know why/how Postfix would be getting the response of 192.28.34.26 instead of one of the above mail server IP addresses? Is this on part of my server or to do with the DNS configuration of 3M? The fix I have in place was to put "208.65.144.12 mmm.com" in my /etc/hosts file. Thank you in advance for any assistance. Regards, -Andreas Andreas Freyvogel ecmarket Customer Solutions Manager E: afreyvo...@ecmarket.com P: 604.638.2300 x147 C: 604.603.3319