[OT] Sendmail and access file question

[Rose, Bobby]

I knew about the check_compat option but it has 2 problems, 1) you've
already accepted the whole message 2) doesn't have an OK/RELAY action.

I'm taking a look at milter-regex even though I was hoping for something
less intrusive like a local ruleset that someone had already written for
this kind of purpose.


-----Original Message-----
From: mailscanner-bounces at lists.mailscanner.info
[mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of David
Lee
Sent: Monday, October 02, 2006 2:55 PM
To: MailScanner discussion
Subject: Re: [OT] Sendmail and access file question

Re:

> > I've researched this before in the past but I didn't really find 
> > anything about it on the net or the bat book that says 'ay' or 'nay'

> > on the possibility.  Does anyone know if sendmail's access file can 
> > override the default action based on "both" the mail from and rcpt 
> > to or if a hack exists that allows such definitions?  For example 
> > I'm blocking the domain of evil.remote.domain in the access file but

> > user at local.domain wants mail from spammer at evil.remote.domain but 
> > only from spammer at evil.remote.domain.  In that example, I'm only 
> > aware that I can either OK spammer at evil.remote.domain and thus allow

> > it to email everyone or I use the spamfriend rule on 
> > user at local.domain which means he'll get spam from all
remote.domains.
> >
> > I know I can define this kind of rule in Mailscanner but that also 
> > means I have to accept all mail from spammer at evil.remote.domain 
> > which leads to undeliverable bounces and more wasted traffic and cpu
cycles.
> >
> > Thanks for any input.
> > -=B
> AFAIK the access file is all or nothing. You would have to allow all 
> from the evil spammer, and then let MailScanner sort it out.
> Sounds like you need to lart a luser.

To operate on sender/recipient combinations, the "check_compat" ruleset
and FEATURE(compat_check) might give you routes to explore.

A slight caution:  This is one of the lesser known corners of sendmail.
It may require some work, perhaps even creating your own
"LOCAL_RUELSETS"
entry etc.  The path to success may be more tortuous than for "access".
The journey may be more solitary, with fewer experienced guides to hand.

Hope that helps.

-- 

:  David Lee                                I.T. Service          :
:  Senior Systems Programmer                Computer Centre       :
:                                           Durham University     :
:  http://www.dur.ac.uk/t.d.lee/            South Road            :
:                                           Durham DH1 3LE        :
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