sendmail dnsbl vs MS

[Stephen Swaney]

> -----Original Message-----
> From: MailScanner mailing list [mailto:MAILSCANNER at JISCMAIL.AC.UK] On
> Behalf Of Greg Krzeszkowski
> Sent: Monday, March 29, 2004 10:07 PM
> To: MAILSCANNER at JISCMAIL.AC.UK
> Subject: sendmail dnsbl vs MS
>
> Hi,
>
> I have a firewall/gateway that forwards smtp to my MS box for processing.
> My sendmail.mc has a FEATURE(`dnsbl' ...) for spam/exploit checks, and it
> regularly (2-3 times a day) causes problems.
>
> I know this is a little off topic, but do I really need the feature
> included?
>
> This is the kind of sustained error message I receive in my maillog.
>
> Mar 30 13:03:57 localhost sendmail[11731]: ruleset=check_relay,
> arg1=[192.168.1.254], arg2=192.168.1.254, relay=[192.168.1.254],
> reject=451 4.7.1 Temporary Lookup failure for 192.168.1.254 in sbl-
> xbl.spamhaus.org
>

This indicates you have a periodic network problem resolving the
sbl-xbl.spahhause.org DNS lookups.

Is your Internet connectivity stable and constant?

Steve

Stephen Swaney
President
Fortress Systems Ltd.
Steve.Swaney at FSL.com

> Cheers
>
> --------------------------
> Greg Krzeszkowski
> gregk at infosecsolutions.com.au
>
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>
> Fortress Systems Ltd.
> www.fsl.com
>



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