>From: Tom Kistner <tom@???>
>To: William Thompson <wt@???>
>CC: Ron McKeating <R.J.Mckeating@???>,
> "Exim-Users (E-mail)" <exim-users@???>
>Subject: Re: [Exim] Internal Mail
>Date: Fri, 13 Jun 2003 17:03:57 +0200
>
>William Thompson wrote:
>
>>>Add a condition like
>>>
>>> !hosts = +relay_from_hosts
>>>
>>>BEFORE each "spam" condition.
>>
>>
>> How about:
>> accept hosts = +relay_from_hosts
>>
>> at the very beginning?
>
>Yes, but since I do not know his exact ACL layout, this could have
>some side effects :)
In particular it wouldn't handle what I'm interested in doing. I
want to scan both incoming and outgoing mail through the gateways
for viruses. But only scan incoming email for spam[1]. Having:
accept hosts = +relay_from_hosts
near the front of the ACL would prevent the virus scanning of
outgoing email. And that would be bad news. Sometimes the first
sign of a virus-infected PC is it trying to mail viruses to the
outside world.
[1] I'm sure some of our users occasionally send spam. However
decisions on outgoing mail should be left to the recipient,
not the sending MTA. And that's for at least two reasons: (1)
The recipient shouldn't be trusting any spam advice from the
sending MTA, otherwise spammers could have a field day! (2) The
recipient's spam checking criteria may be different from that in
place on the sending MTA.
