On Sun, 2010-10-31 at 17:42 +0300, Hiisi wrote:
Despite it didn't helped immediately, the problem is gone now. I don't know what caused it because neither me nor ISP people did nothing to it at that moment. Strangely, mail queue released and all letters hit the rcpt to address.
Well, the error message said "temporary" failure, with a "deferred" status of the queue. Once the problem goes away, it can retry. Or may just keep retrying, anyway.
The obvious question occurs: Had you restarted the mailserver during these tests? You usually have to restart servers when you make configuration changes, and sometimes when networks go up and down.
I still don't get an answer if I try a reverse lookup on the IP. Perhaps other servers can do it (i.e. the record's there, but hasn't appeared in the servers that I'm querying).