Hi all,
We have setup spf for the domains that we manage and it has helped
somewhat in cutting down spam and viruses. I would like to know whether a
spf aware mail exchnager can be setup to reject double bounces when the
original e-Mail did not originate from our server.
The following is what is happening:
A spammer or virus infected machines sends out spam/virus to invalid
addresses (but valid domains) using the postmaster address of one of our
domains. The recipient site bounces the message with a 'user unknown'
error and the bounce is sent to the postmaster here. This double-bounce
message is accepted by our server.
Can anything be done to reject such double-bounce messages? Thanks
much in advance.
Regards
SK
+------------------------------------------------------------+
| Suresh Khatry (Mr.) <mailto:Suresh.Khatry@unon.org>
| Chief, Network Services Unit <mailto:Postmaster@unep.org>
| Information Technology Services <ICQ:44617574>
| United Nations Office at Nairobi (UNON) <NIC Handle: SK465>
| P.O. Box 47074, Nairobi, Kenya <RIPE Handle: SK136-RIPE>
| Phone: +254 (20) 621234, [Direct: +254 (20) 623427]
| Fax: +254 (20) 226890, [Direct: +254 (20) 624297]
| Cell: +254 (0)733 333305
| WWW => http://www.unon.org http://www.unep.org
+------------------------------------------------------------+
K E E P I N G Y O U I N T O U C H W I T H T H E W O R L D
-------
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We have setup spf for the domains that we manage and it has helped
somewhat in cutting down spam and viruses. I would like to know whether a
spf aware mail exchnager can be setup to reject double bounces when the
original e-Mail did not originate from our server.
The following is what is happening:
A spammer or virus infected machines sends out spam/virus to invalid
addresses (but valid domains) using the postmaster address of one of our
domains. The recipient site bounces the message with a 'user unknown'
error and the bounce is sent to the postmaster here. This double-bounce
message is accepted by our server.
Can anything be done to reject such double-bounce messages? Thanks
much in advance.
Regards
SK
+------------------------------------------------------------+
| Suresh Khatry (Mr.) <mailto:Suresh.Khatry@unon.org>
| Chief, Network Services Unit <mailto:Postmaster@unep.org>
| Information Technology Services <ICQ:44617574>
| United Nations Office at Nairobi (UNON) <NIC Handle: SK465>
| P.O. Box 47074, Nairobi, Kenya <RIPE Handle: SK136-RIPE>
| Phone: +254 (20) 621234, [Direct: +254 (20) 623427]
| Fax: +254 (20) 226890, [Direct: +254 (20) 624297]
| Cell: +254 (0)733 333305
| WWW => http://www.unon.org http://www.unep.org
+------------------------------------------------------------+
K E E P I N G Y O U I N T O U C H W I T H T H E W O R L D
-------
Archives at http://archives.listbox.com/spf-help/current/
Donate! http://spf.pobox.com/donations.html
To unsubscribe, change your address, or temporarily deactivate your subscription,
please go to http://v2.listbox.com/member/?listname=spf-help@v2.listbox.com