topic unwanted mails in Operating System - Linux

unwanted mails

rmedidi — Mon, 01 May 2006 21:02:51 GMT

Hi all, nowadays i am facing a problem in which so many bounced mails are getting into my INBOX ulthough i do not actually send mails at all. Please help me how to block them.
Respond me PLZ.

thnx

Re: unwanted mails

Rajeev Shukla — Mon, 01 May 2006 23:27:02 GMT

Look at the header of the mails and try to figure out from where they are originating and then probably work on the reason why someone is sending mails to you

Re: unwanted mails

Steven E. Protter — Tue, 02 May 2006 01:37:47 GMT

Shalom,

Most likely, somone is using your email address as a from address for spam.

grep yourmail@your.net /var/log/maillog

Did you send all of these messages?

Possible solutions:
Tighten up relay and access database on sendmail, if there is evidence that the bounce messages originated on your server.

If the messages originated elsewhere, the best solution is to change your email addresses. Then the bounces don't bounce back to you.

SEP

Re: unwanted mails

Bill Thorsteinson — Tue, 02 May 2006 16:45:02 GMT

If possible get at sender policy framework
record added to your DNS records.
The SPF record specifies which hosts can
send email for your domain. MTAs that
support it will deny mail from servers not
specified int he SPF record.

This will reduce but not eliminate the bounce
records, but does make your domain much
less attractive for spammes to hijack.

I get occational misdirected SPF bounce
messages inidicating failed hijacking
attempts.

See http://www.openspf.org/ for more details.

Re: unwanted mails

Manuel Wolfshant — Tue, 02 May 2006 23:42:25 GMT

and the obvious solution... use antispam software. Spamassassin ( http://spamassassin.apache.org/ ) and Bogofilter ( http://bogofilter.sourceforge.net/ ) are two effective (and popular choices)