domain message filtering (again)

[Goesta Smekal - EDV Dienstleisungen]

dear folks,

  after successful development and testing of my attachment filter (posted earlier in 
this list and available for download from Lukas Freys site 
http://www.web4free.ch/xmail) on my testserver (Slackware Linux, XMail 0.70) I happily 
installed it on one of my production machines (SuSe 7.0 Linux, XMail 0.69).

  Then something strange happened: We host a mailing list there, say 
[EMAIL PROTECTED] So I set up the file 
'[EMAIL PROTECTED]' containing the line 
'"/var/MailRoot/bin/mailfilter"<TAB>"@@FILE"'.

  Sending mail to '[EMAIL PROTECTED]' worked fine, filtering out unwanted 
attachments. BUT '[EMAIL PROTECTED]' was able to circumvent the filter. !?!? Is 
XMail case sensitive when matching filter rules ? (IMHO this would be a flaw)

  So I set up some more filters, for 'MailList@...' 'MAILlist@.." etc. you get the 
point ... 
Short after that a posting to the list (ironically announcing the new filter) led to 
desaster. XMail delivered the message multiple times and then died. It did NOT log the 
sent copies to logs/smtp... . The only way to return to normal operation was 'rm -r 
/var/MailRoot/spool/*' and (for safety) remove all but one of the filter .tab files.

  How ? Why ? Why me ?? ;-)

  any hint welcome

  Goesta
-- 
Goesta Smekal - IT Solutions

Rodaunerstr. 49/6/4
AUSTRIA - 1236 Vienna
Tel ++431 971 57 34

Download my PGP public key from:
http://www.keyserver.net/en/ , search for "EDV-Smekal"