Scanning outbound mail?
rich at mail.wvnet.edu
Fri Feb 10 13:41:20 GMT 2012
John Wilcock wrote:
> Le 09/02/2012 17:44, Richard Lynch a écrit :
>> So, I'm trying to get a feel for what other sites do. Do you use
>> MailScanner for outbound mail? If so how do you handle messages that
>> are rejected? Do you bounce it or just ignore it or what?
> I have things set up with rulesets, to bounce spam and to notify
> sender of virus/filename/filetype violations for outbound only.
> On my small site this has never posed any problems, though for larger
> sites you'd have to think about the volume implications if an internal
> sender managed to get infected with a spambot.
And this is the exact problem that has brought this question up. We've
had some users get infected and spew spam/phishing/etc out in mass
through our outbound smtp gateway. This caused the gateway to get
blacklisted which impacted everyone. So the question has come up about
filtering outbound mail. I don't know if it's a good idea or not. I
don't want to create a bunch of problems not thought of -- the cure
being worse than the ailment! What do your rulesets look like?
Obstacles are those frightening things we see when we take
our eyes off our goal.
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