confusing spam rules

Kai Wang kwang at UCALGARY.CA
Mon Mar 3 19:31:27 GMT 2003


Thank you for you reply, Julian. Is there possible to check
a name against the SMTP connection in the next version?
We are running a spam bouncing program for incoming.
We have more than 1000 entries of the domain name rules
( most of them have wild cards ). We plan to migrate the
rules to MailScanner. This is really important to us.

Kai

Julian Field wrote:

> At 17:35 03/03/2003, you wrote:
> >We plan to use MailScanner to tag the spam messages. After
> >a few tests, I found the spam rules in MailScanner are very
> >confusing.
> >
> >     In /etc/MailScanner/MailScanner.conf:
> >
> >----------------------------------------------------------------------------
> >
> >     Is Definitely Not Spam = /etc/MailScanner/rules/spam.whitelist.rules
> >
> >     Is Definitely Spam = /etc/MailScanner/rules/spam.blacklist.rules
> >
> >1) Domain name does not match but ip address matches
> >
> >     I configured a host name in
> >/etc/MailScanner/rules/spam.blacklist.rules
> >     and sent a message from the machine, the message did not match the
> >rule.
> >     Then I replaced the hostname with its IP address and sent the same
> >     message again from the same machine, it matched the spam rule.
> >
> >     cat /etc/MailScanner/rules/spam.whitelist.rules
> >     FromTo: default         no
> >
> >     cat /etc/MailScanner/rules/spam.blacklist.rules
> >     From:     /lms5.acs.ucalgary.ca/   yes
> >     FromTo: default                 no
>
> If it is a name in the pattern, then it is checking the envelope sender of
> the message, whereas a numerical test will check the other end of the SMTP
> connection.
>
> >2) wildcard(*) sometimes works, sometimes not
> >
> >     The black list rule "To: fs50*@ucalgary.ca yes" does not match
> >     a message to fs501 at ucalgary.ca. But the black list rule "From:
> >     fs50*@ucalgary.ca yes" matches a message from fs501 at ucalgary.ca.
>
> Don't understand that at all. Suggest you re-check your tests. All the
> rulesets are built from exactly the same code, so they must behave the same.
> --
> Julian Field
> www.MailScanner.info
> Professional Support Services at www.MailScanner.biz
> MailScanner thanks transtec Computers for their support



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