MS punishes my own modem pool

InvictaWiz Customer Support martyn at
Sun Jan 25 20:22:05 GMT 2004

Perhaps someone can help with a variation of this question for me?

We have users that dial in from other ISPs. We use SMTP AUTH to ok them for Sendmail relay purposes.
However, if I check against a DUL, they all get blocked even though they are providing AUTH details.
Any ideas please?
I daren't start whitelisting IP addresses as they are all dynamic

Martyn Routley

-----Original Message-----
From: MailScanner mailing list [mailto:MAILSCANNER at JISCMAIL.AC.UK]On
Behalf Of Daniel Kleinsinger
Sent: 22 January 2004 22:25
Subject: Re: MS punishes my own modem pool

> >In your spam rules.. Whitelist your From your domain

>True.  Better than my idea.  Also check for the filename/filetype settings,
your users may get pissed   >off if you filter the .exe.

Actually, I think that whitelisting the IPs would be better than
whitelisting the domain because it's a common spammer tactic to send from
user at  Within MailScanner complete whitelisting is the only

However, the SpamAssassin blacklist checks are much more configurable.  If
you're interested in spam checking mail from your dialup users you could use
SA's blacklist checks and make use of the trusted_networks config option in
SpamAssassin.  That would still run the pattern matching type rules on local
dialup email, but disable network checks.


> > Julian,
> >
> > Here's a puzzle...  Our modem pool ( is listed on
> >, CBL,  Ok, good.  But if I
> > use "Spam List = SORBS-DNSBL" in MS, then all of my modem users get
> > their outbound email tagged with {Spam?} in the subject line, which
> > really annoys my users and makes me look like an idiot -- even if
> > they are doing the right thing and sending their email thru our
> > mail-hub. How to prevent this, yet still use SORBS, CBL, etc?
> >
> > Jeff Earickson
> > Colby College
> >

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