Link writes:
Hello all, I`m completely stuck.... I have postfix using maildrop for virtual domains. Everything work fine until i create mailbox like name.surn...@domain In such case i get in log:Jul 25 12:26:00 hvost postfix/pipe[6255]: D4E8011A5C4: to=<name.surn...@domain>, relay=maildrop, delay=0.21, delays=0.1/0.01/0/0.09, dsn=5.1.1, status=bounced (user unknown. Command output: Invalid user specified. )pop/imap for such type of users works perfect
You did not state whether or not you've installed some homemade global maildroprc to determine delivery location for each mailbox, or whether you're using courier-authlib.
If you're using a global maildroprc, you did not post its contents. If you're using courier-authlib, you did not specify which authentication module you've configured, and the contents of its corresponding configuration file.
The only thing that's clear from you, is that it's only a matter of time before you'll get yourself blacklisted. This is because, based on the above, the way you've configured your entire mail server, is that it fails to reject unwanted mail. Instead, it accepts it, then bounces it to the purported return address. Which, unless you've been on the moon for the past ten years, is always forged for junk mail, so your mail server will join many other similarly broken mail servers in mailbombing innocent victims of forged spam. It's only a matter of time before you end up bouncing a massive hairball to some popular DNSBL's spamtrap, and they, justifiably, will blacklist your IP address. And then you'll wonder why.
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