Hello all, I am having a bit of a problem and I am not sure that it is specifically Postfix-related, but I'll give it a shot. Feel free to flog me or tell me to go away.
I am running Postfix 2.3 on a CentOS Linux server. I noticed on our firewall that there were constant connections from the machine running Postfix to addresses all over the world. The interesting thing is that the connection is using OpenDNS [208.67.216.132], a public DNS server. I do not use OpenDNS in my /etc/resolv.conf file (I have 2 other nameservers listed) and I don't know where it is coming from. Here is an example: Aug 11 16:01:25 swiki postfix/smtp[7832]: E38F8DB4CCB: to=<ysamo9...@sx.cn>, relay=none, delay=30, delays=0/0/30/0, dsn=4.4.1, status=deferred (connect to sx.cn[208.67.216.132]: Connection timed out) If this is the appropriate place to post this question, can someone who knows more than me analyze this and come up with a theory as to what is going on? Thanks for any help you might want to provide.
