Using postfix MTA and need help understanding some entries
 

I am using postfix as a MTA. I just installed it and it was very easy. Using the documentation I have it using spamassassin as a transport. Everything seems to work ok except that when I look in the /var/log/maillog I have the entries like the following:

Dec 23 14:09:39 pmcserv1 postfix/smtp[27506]: 71DA3B4599: to=<cb2977@yahoo.com>,
relay=mx3.mail.yahoo.com[64.156.215.5], delay=311, status=sent (250 ok dirdel)


To me, that entry tells me that my mail server just relayed mail to some other system; that's not exactly the result I was looking for. I then tried to do it myself from other locations and it bounces back my attempts with the "Relaying not allowed" message but I keep seeing entries like this.

I have tried looking into this and, as a result, have setup .db (access_sender & access recipients) files using postmap but I can't see a change in these log entries. I also have the server using SASL authentication if that applies to these entries.

This is the only anomaly with the entire thing so if anyone could help me understand what this means I would appreciate it very much. I thought of googling it but that kind of entry has too many quirks with it and google doesn't get me anything useful. :(

If there are any files that I should post, please let me know. Thanks in advance.

Not a single person knows? Not one at all? You guys are telling me that I'm the only one ever to have seen this, ever? Am I posting in the wrong forum or something? How about some "I don't know"'s so that I know people are actually reading it. Maybe I'm just posting on the wrong website... I need to find people who actually know. CYA!

P.S. If this is months later and you see this post and want to reply, don't bother...

With variables at their default value, you control who can relay mail with the mynetworks or mynetworks_style parameters. You can see their present value by running Better yet, have a look at all variables which have been changed from their default value with Your logs show that mail was sent to yahoo. Fine. But, who sent it? Perhaps a legitimate user? Your logs should show who initiated the transaction.