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Spam slipping through NST? [message #1233] Thu, 01 September 2005 15:48
Dave Camenisch
Messages: 30
Registered: December 2004
Member
I noticed something strange: normally when a mail passes NST there are a few lines added to the mail header. Something like this:

X-Spam-Checker-Version: SpamAssassin 3.0.4 (2005-06-05) on cyberdog
X-Spam-Level:
X-Spam-Status: No, score=0.2 required=5.8 tests=BAYES_50 autolearn=no
version=3.0.4

In the past time (since a few month) I get a lot more spam. So I checked the header and there is no stamp from NST in it. Why not? Should not every mail get an info added when passing NST?

-- Dave
Re: Spam slipping through NST? [message #1234 is a reply to message #1233] Mon, 05 September 2005 15:01 Go to previous message
support
Messages: 918
Registered: April 2004
Senior Member
> I noticed something strange: normally when a mail passes NST
> there are a few lines added to the mail header. Something like
> this:
>
> X-Spam-Checker-Version: SpamAssassin 3.0.4 (2005-06-05) on
> cyberdog
> X-Spam-Level:
> X-Spam-Status: No, score=0.2 required=5.8 tests=BAYES_50
> autolearn=no
> version=3.0.4
>
> In the past time (since a few month) I get a lot more spam. So
> I checked the header and there is no stamp from NST in it. Why
> not? Should not every mail get an info added when passing NST?

This can happen for several reasons:

- The message might be larger than the skip size (256k by ddefault)
- The message's recipient address is not licensed
- Make sure you seee NST's "Received" header somewhere at the top of the message. If it is missing, the mail is not passed through NST at all (maybe received on a secondary server?)



Customer Support
Byteplant GmbH
Re: Spam slipping through NST? [message #1235 is a reply to message #1234] Mon, 05 September 2005 15:26 Go to previous message
Dave Camenisch
Messages: 30
Registered: December 2004
Member
> This can happen for several reasons:

> - The message might be larger than the skip size (256k by ddefault)
No, all are smaller than the skip size.

> - The message's recipient address is not licensed
No, unlimited licence.

> - Make sure you seee NST's "Received" header somewhere at the top of the message.
> If it is missing, the mail is not passed through NST at all (maybe received on a secondary server?)
The header contain a NST received information (...with No Spam Today! Service V2.3.1.2 Unlimited Recipients...) but no tags from SpamAssassin.

I found the problem when I controlled the logfile. The spam check by SpamAssassin has run in a timeout (not on every mail, but on most of it). Then I setup the timeout from 30 to 45 seconds and now it works again.

-- Dave

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