Gordan Bobic wrote:
> On Wed, 10 Oct 2007, Bernd Wurst wrote:
>
>>> I've been using courier for a while now and I'm generally quite happy with
>>> it. I quite like being able to use just one package, rather than mixing
>>> and matching one SMTP daemon with another IMAP daemon with another POP3
>>> daemon, etc. But one thing really annoys me. It always seems to accept
>>> email, provided it accepts email for that domain - even if the user
>>> doesn't exist, and the email is thus undeliverable. This means my outgoing
>>> spool fills up with spam bounces.
>>>
>>> I'm assuming this is due to my having misconfigured it in some way, but
>>> I'm not sure where to look for the problem. How can I ensure that the
>>> undeliverable recipients are identified and the connection dropped as
>>> soon as the RCPT TO: command is received?
>> Make sure the "mail" useraccount (or whoever the ESMTP-daemon runs as) is
>> able
>> to see your .courier-files.
>> Courier checks during the SMTP dialog if your address exists. But if it can't
>> read your directory, it will accept everything for that domain.
>
> What .courier files? Where? In the home directories? Surely it doesn't
> check all .courier files in all home directories every time a mail
> arrives.
No, Courier doesn't. If a mail is slated for local delivery, then
Courier looks up the system user associated with that email address
(after aliases are expanded) using authdaemon to locate the home
directory for that user. That home directory is searched for .courier
files. You just need to make sure that those .courier files are
readable by that system user.
Cheers,
-- Johnny C. Lam
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