Problem with sendmail and spamhaus

[Randal, Phil]

kfliong wrote:
> Hi,
>
> I added the line below to my sendmail.mc and then regenerated
> the sendmail.cf file.
>
> FEATURE(`dnsbl', `sbl-xbl.spamhaus.org', `"550 5.7.1 ACCESS
> DENIED to <"$&f"> thru "$&{client_name}" by The Spamhaus
> SBL+XBL DNSBL ; Please visit http://www.spamhaus.org/ for
> more information."')dnl
>
> It's working fine by stopping spams from spamhaus list before
> mails could even reach mailscanner and thus freeing my server
> load. I love this feature a lot as we are getting tons of spams daily.
>
> But the problem is, some of my users also are unable to send
> their emails using SMTP server as their "dynamic" IP is
> banned because some of the ips are listed in spamhaus. They
> keep getting the error above. How can I rectify this? Is
> there a command for me to add to allow user based on their IP
> address or email address?
>
> Perhaps I could allow IP address of certain range (within my
> ISP) to go through this? After all, once the mails pass
> through this barrier, there are also Mailscanner to take care
> of the spams.
>
> Thanks in advance.

I think you'd be better off using the SBL list in sendmail and scoring
the XBL list in spamassassin.  I've seen a few false positives which
seem to come from the  XBL list.

Cheers,

Phil
----
Phil Randal
Network Engineer
Herefordshire Council
Hereford, UK

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