Maybe OT - postfix and catch-all accounts

[Brian Parish]

This could be a purely postfix issue, so apologies if it's a bit OT here.

One of the domains I host requires a catch-all mail account - yes, I
know - spam collector.  I understand that the way this is done is to
put:

@domain mailbox

in /etc/postfix/virtual then postmap virtual

But I find with this defined that some properly defined addresses for
other domains end up having their mail directed to the catch-all.  I
can't work out a pattern, but monitoring shows an incoming message to:

valid-address at valid-domain being scanned by MailScanner, found clean and
directed to the catch-all.  Other addresses in the same domain work
correctly.

By commenting out the catch-all account and running postmap again, these
addresses work correctly without other alteration.

Have I found a bug or a feature I don't understand?

TIA
Brian

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