Problem with user emails sent using postfix smtp authentication blocked as spam

[Glenn Steen]

2009/9/17 Neil Wilson <neilw at dcdata.co.za>:
> Hi guys,
>
> I've got a problem with a user sending email from a dynamic IP to his server
> using SMTP authentication.
>
> His emails are being blocked as spam(score of 7) because of the dynamic IP
> and reverse dns entries.
>
> I can whitelist his address, but the problem with this is that there are a
> lot of faked sender address spam emails coming from the same address.
>
> I can reduce the points being allocated for each rule, but this will affect
> all emails so will reduce the spam filtering efficiency.
>
> Any suggestions will be greatly appreciated.
>
> Regards.
>
> Neil.

Either let the TLS authenticated sender (your user) bypass MS
altogether (might be tricky getting that right:-), or use an SA rule
to "counteract" the score penalty by way of some identifiable thing in
the resulting headers.

Cheers
-- 
-- Glenn
email: glenn < dot > steen < at > gmail < dot > com
work: glenn < dot > steen < at > ap1 < dot > se