Cyrus delivers claims that the mailbox does not exist
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Given that you have a username "john@domain.tld", unless you escape
the ‘@’ as explained below, Cyrus deliver will claim that the mailbox
does not exist.

Instead of "deliver john@domain.tld" you should be using "deliver
john\\\@domain.tld".

And instead of "deliver -a john@domain.tld -m user/john@domain.tld"
you should be using "deliver -a john\@domain.tld -m
user/john\\\@domain.tld"

As far as the ‘@’ is concerned, the same applies while not using the
unixhierarchysep.

keywords: cyrdeliver master.cf
