Outgoing scanning

Jonas Akrouh Larsen jonas at vrt.dk
Tue Feb 19 15:01:05 GMT 2013

Hi Dennis Thanks for responding

> -----Original Message-----
> From: mailscanner-bounces at lists.mailscanner.info [mailto:mailscanner-
> bounces at lists.mailscanner.info] On Behalf Of Denis Beauchemin
> Sent: 19. februar 2013 14:33
> To: MailScanner discussion
> Subject: RE: Outgoing scanning
> Jonas,
> We have incoming and outgoing MailScanner servers. The incoming ones
> have stricter rules and do not bounce any email. The outgoing ones have
> more permissive rules but will bounce spam back to its sender. The outgoing
> servers will only accept emails from our networks. We've had this setup for
> years and it is working pretty well.
> At one point I tried to configure a single MailScanner for both incoming and
> outgoing purposes but I ran into problems and abandoned the idea. We now
> run dual outgoing, triple incoming and dual special outgoing (mostly for
> mailing lists and bulk emails). Having more than one server for one purpose
> has benefits such as being able to upgrade one server while the other is still
> processing emails.

Hmm I did consider setting up a dedicated outgoing scanning pair, but couldn't really see why I should have any problems distinguishing between incoming and outgoing. Can you elaborate on what problems you ran into?

Also are you sure your high scoring spam is bounce in your setup? As far as I can see mailscanner only allows you to bounce spam, not high scoring spam.

Although I guess if the setup is dedicated for outgoing, you can just mark all spam as normal spam, and none as high scoring..

> I would prefer to simply bounce the email if it is considered spam. This is
> allowed for normal scoring spam but not for high scoring spam.
> Somebody tried to make an argument for it a couple of years ago on the list,
> but it seems nobody really understood what he wanted to do, but simply
> kept on with the “never bounce spam”
> Since quarantining or deleting outgoing mail without ever letting the sender
> know makes no sense to me, im curious as to what tohers are doing?
> Are you simply whitelisting all outgoing mail?
> Only virus scanning it, but not spam scanning it?
> Maybe you are spam scanning it but with a much higher score limit?
> Since we can’t scan at smtp time, I see no other good reason than to bounce
> the spam back to the user, WHEN ITS OUTGOING.
> This means this is only for internal users, hence I don’t see how the normal
> policy about not bouncing spam applies.
> Also it’s a bit weird that its allowed for normal scoring spam and not high
> scoring.
> Hope somebody have some insights to share ☺
> Med venlig hilsen / Best regards
> Jonas Akrouh Larsen
> TechBiz ApS
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