Jason Bertoch wrote:
-----Original Message-----
From: [email protected] [mailto:mimedefang-
[email protected]] On Behalf Of Les Mikesell
Sent: Monday, June 08, 2009 10:44 AM
To: [email protected]
Subject: Re: [Mimedefang] Blocking Dictionary Attacks
Matt Garretson wrote:
afo cliff wrote:
@mydomain.com bitbucket
You can also do something like this in your virtusertable:
@mydomain.com error:5.1.1:550 User unknown
Then, you won't need the bitbucket alias.
See http://www.sendmail.org/m4/features.html
Yes, that approach will be much faster - sendmail will reject
everything
early unless it has a valid recipient and it won't have to go through
the mimedefang spam/virus scan.
I seem to recall that enabling FEATURE(delay_checks) was recommended as part
of the MIMEDefang setup. It does provide much more useful logs, but I
believe it also means that milters are run before virtuser rejects.
I thought it would only delay until after RCPT TO: (so you'd run
filter_relay, filter_sender, filter_recipient functions in mimedefang if
you have them) but still before DATA where the heavy lifting is done.
--
Les Mikesell
[email protected]
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