Authenicating users

[Mike Kercher]

You will really like milter-sender.  It performs the call-ahead that
milter-ahead performs, but it also performs a call back to the sender email
address to make sure it is valid and accepting mail.

Mike


-----Original Message-----
From: MailScanner mailing list [mailto:MAILSCANNER at JISCMAIL.AC.UK] On Behalf
Of Doc Schneider
Sent: Saturday, May 21, 2005 5:16 PM
To: MAILSCANNER at JISCMAIL.AC.UK
Subject: Re: Authenicating users

Drew Marshall wrote:
> Doc Schneider wrote:
>
>> I'm running MS on my secondary MX server and was wondering if there
>> is a way for it to (possibly through a map file?) find the valid
>> users for the domains I secondary. I would like  to stop the spammers
>> from hitting me with, literally, thousands of dictionary (unknown users)
attacks?
>>
>> I'm using all kinds of RBLs and blacklists but still getting a lot
>> slipping through.
>>
>> Oh running Sendmail 8.13.4 on it as well. With delay_checks,
>> greet_pause and all the goodies.
>>
>> I'm not running an LDAP server, but could I suppose for this.
>
>
> Or indeed SQL or copy the map files from the primary (Depending on
> your primary's MTA). I suggest having a look at the wiki, which has
> got some good examples (The address is in the footer of all the list
> postings)
>
> Drew

Drew,

I had looked all over sendmail.org and did a search on the wiki. Nothing
jumped out at me. Using the same version of Sendmail on all my servers.

Any particular wiki entry you would recommend?

I do run SQL servers on all my boxen. And my user base very rarely changes.
So you think adding something like:

@maddoc.net     ERROR:550 no such user here
maddoc at maddoc.net       maddoc at mail.maddoc.com

into like the virtusertable would work?

I'm also looking at those milters Michele and Mike suggested. Thanks folks!

-Doc

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