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Expression filter blocks (almost) everything

I'm using the expression v|agra that is apparently causing most of our mail to get blocked (some get through).
Any idea why? Isn't the | sign allowed in the expression filter?
I sent an empty mail to test things out:

   ----- The following addresses had permanent fatal errors -----

    (reason: 550 X-Regex-Match: v|agra (blacklisted))

    (reason: 550 X-Regex-Match: v|agra (blacklisted))

   ----- Transcript of session follows -----
... while talking to mail.xxxx.be.:
>>> DATA

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0 synopex over 20 years ago

why you do not upgrade to v5? you get more flexibility with expression filter like regex etc.
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0 frankske_ over 20 years ago in reply to synopex

Seems V5 has too much problems still.
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0 Xeno over 20 years ago in reply to synopex

isn't | the sign for OR? So you match for v OR agra? A "v" should appear in nearly every email. Try "v\|agra" (of course without the "").
Search for "Perl Regular Expressions" to get more informations how to use them.

Xeno
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0 frankske_ over 20 years ago in reply to Xeno

thanks! I'll try it out [:)]
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0 frankske_ over 20 years ago in reply to frankske_

nope, doesn't work. Sending a test mail results in:

Content Scanner: X-Regex-Match: v|agra (blacklisted)

I found that the | character is the same as \x7c
So I used v\x7cagra in the expression, but (although it results in looking for v|agra), it doesn't work either. My test mail still gets blocked with:

Content Scanner: X-Regex-Match: v|agra (blacklisted)

anyone have a solution for me?
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0 synopex over 20 years ago in reply to Xeno

this will not work because imho v4 does not support regex, only v5.
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0 Xeno over 20 years ago in reply to synopex

V4 also uses Regular Expression for Expression Filter in SMTP-Proxy.

Xeno
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