Disable receiving mails for one user

[Michael Heide]

Hi List.

Is there any possibility to disable receiving non-postfix-internal
mails for one account/user?

I've created a user archive at domain and enabled always_bcc=archive at domain
for "cleanup" in postfix' master.cf.
Now every incoming or outgoing mail is BCCd to archive at domain. That's
what I wanted.

The drawback is: Not only postfix is able to forward mails to this
account but anyone is able to send mails exclusively to archive at domain.
This is unwanted.

The desired behaviour is that no one should be able to send mails to
archive at domain, but postfix itself obviously should be allowed to do so.

Is there anyone knowing a solution? Anyone with a hint?

Btw: is there any way to disable receiving mails for a user without
deleting the whole account?

Regards
Michael

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