Hello,
Today i had a mail that stuck in the queue with error:
lost connection with mail.someserver.xxx [xx.xxx.xxx.xxx] while
sending RCPT TO), so i looked at logs.
During the session, their server sent mail:
from=<> to=<[email protected]>
proto=SMTP helo=<mail.someserver.xxx> and got greylisted each time.
After this, mail ended in deferred. So I whitelisted their
adress(postgrey), flushed the queue. Again their server
sent a test message, got answer "user unknown" and finally my mail was
delivered.
Is it common to send such testing messages ?
Regards,
Tomasz
