sender verification

[Aaron K. Moore]

Spam Assassin 3.0.x includes SPF tests.  You can find the list of tests
here:
http://spamassassin.apache.org/tests_3_0_x.html

You may want to change the amount they contribute to the score. 


--
Aaron Kent Moore
Information Technology Services
DeKalb Memorial Hospital, Inc.
Auburn, IN
Phone:  260.920.2808
E-mail:  amoore at dekalbmemorial.com

-----Original Message-----
From: MailScanner mailing list [mailto:MAILSCANNER at JISCMAIL.AC.UK] On
Behalf Of Jim Holland
Sent: Wednesday, May 11, 2005 1:38 AM
To: MAILSCANNER at JISCMAIL.AC.UK
Subject: Re: [MAILSCANNER] sender verification

On Wed, 11 May 2005, Julian Field wrote:

> The whole point of milter-sender and milter-ahead is that they are
> implemented at the SMTP acceptance phase, and reject the message
without
> any local processing overhead if the checks fail. MailScanner does not
> get involved with the SMTP conversation at all, I leave that to the
MTA
> (ie sendmail in this case), so it can't replace the functionality of a
> milter as it doesn't get processed until later on, once the message
has
> been accepted.

Yes, I realise that, but that is not what I am looking for, as blocking
mail at the SMTP stage could lead to unacceptably high rejection rates
of
legitimate mail.  That is why I would like to see this being implemented
after receipt of the message - just as DNSBL and other checks are
carried
out afterwards by MailScanner.  It means that retrieval from quarantine,
and whitelisting of specific addresses could be implemented consistently
with other MailScanner features.

> Jim Holland wrote:
>
> >Hi Julian
> >
> >I see that there has been some discussion earlier about the use of
> >milter-sender with sendmail to verify that the sender's address does
exist
> >before accepting mail.  That then allows mail to be rejected at
connection
> >time if the sender's address seems to be fraudulent.
> >
> >I like the idea behind milter-sender, but would much prefer it to be
> >integrated with MailScanner rather than sendmail, so that false
positives
> >(eg no-reply type addresses and other mail blocked due to problems
that
> >are sure to arise) result in mail being quarantined rather than
bounced.
> >Is this an option that you would be interested in accepting on the
> >wishlist for future development of MailScanner?
> >
> >Regards
> >
> >Jim Holland
> >System Administrator
> >MANGO - Zimbabwe's non-profit e-mail service
> >
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> >'leave mailscanner' in the body of the email.
> >Before posting, read the Wiki (http://wiki.mailscanner.info/) and
> >the archives (http://www.jiscmail.ac.uk/lists/mailscanner.html).
> >
> >Support MailScanner development - buy the book off the website!
> >
> >
> >
>
> --
> Julian Field
> www.MailScanner.info
> Buy the MailScanner book at www.MailScanner.info/store
> Professional Support Services at www.MailScanner.biz
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>
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>
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>
> Support MailScanner development - buy the book off the website!
>

Regards

Jim Holland
System Administrator
MANGO - Zimbabwe's non-profit e-mail service

------------------------ MailScanner list ------------------------
To unsubscribe, email jiscmail at jiscmail.ac.uk with the words:
'leave mailscanner' in the body of the email.
Before posting, read the Wiki (http://wiki.mailscanner.info/) and
the archives (http://www.jiscmail.ac.uk/lists/mailscanner.html).

Support MailScanner development - buy the book off the website!

------------------------ MailScanner list ------------------------
To unsubscribe, email jiscmail at jiscmail.ac.uk with the words:
'leave mailscanner' in the body of the email.
Before posting, read the Wiki (http://wiki.mailscanner.info/) and
the archives (http://www.jiscmail.ac.uk/lists/mailscanner.html).

Support MailScanner development - buy the book off the website!