Hello,

Recently I discover email in queue which stays forever and delivers over
and over. The problem was '&' in local part of email address.

Server is Centos 5.7, courier-authlib-0.63.0, courier-0.65.0.

Logs:

Jan 31 15:50:30 courierd:
started,id=0000000000A68015.000000004F279986.00005EF9,from=<em...@example.com>,module=local,host=a...@example.com!!1001!1001!/home/vmail/example.com/all!!1000000000S,addr=<a...@example.com>
Jan 31 15:50:36 courierlocal:
id=0000000000A68015.000000004F279986.00005EF9,from=<em...@example.com>,addr=<a...@example.com>:
 sh: m...@example.com: command not found
Jan 31 15:50:36 courierlocal:
id=0000000000A68015.000000004F279986.00005EF9,from=<em...@example.com>,addr=<a...@example.com>:
 maildrop: error writing to mailbox.
Jan 31 15:50:36 courierlocal:
id=0000000000A68015.000000004F279986.00005EF9,from=<em...@example.com>,addr=<a...@example.com>:
 maildrop: Unable to deliver to mailbox.
Jan 31 15:50:36 courierlocal:
id=0000000000A68015.000000004F279986.00005EF9,from=<em...@example.com>,addr=<a...@example.com>,status:
 deferred
Jan 31 15:55:36 courierd:
started,id=0000000000A68015.000000004F279986.00005EF9,from=<em...@example.com>,module=local,host=a...@example.com!!1001!1001!/home/vmail/example.com/all!!1000000000S,addr=<a...@example.com>
Jan 31 15:55:41 courierlocal:
id=0000000000A68015.000000004F279986.00005EF9,from=<em...@example.com>,addr=<a...@example.com>:
 sh: m...@example.com: command not found
Jan 31 15:55:41 courierlocal:
id=0000000000A68015.000000004F279986.00005EF9,from=<em...@example.com>,addr=<a...@example.com>:
 maildrop: error writing to mailbox.
Jan 31 15:55:41 courierlocal:
id=0000000000A68015.000000004F279986.00005EF9,from=<em...@example.com>,addr=<a...@example.com>:
 maildrop: Unable to deliver to mailbox.
Jan 31 15:55:41 courierlocal:
id=0000000000A68015.000000004F279986.00005EF9,from=<em...@example.com>,addr=<a...@example.com>,status:
 deferred

.mailfilter problem line:

cc "!m&m...@example.com"

Is '&' are allowed char in email address? If yes, how to escape '&'
in .mailfilter? There is no other problems with 'm&m...@example.com'.

Thanks,
Svetozar Mihailov


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