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Notes/Domino 8 Forum

Notes/Domino 8 Forum
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relaying and public blacklists

1. Be sure you aren't relaying. The configuration document in the Domino Directory has a section for SMTP Inbound Controls. Enter your own domains & IP addresses/ranges in the "Allow messages only from the following internet hosts to be sent to external internet domains:" field.
2. Use public blacklists. Also on the SMTP Inbound Controls page Currently recommending:
DNS Blacklist filters: Enabled
DNS Blacklist sites: bl.spamcop.net
zen.spamhaus.org
Desired action when a connecting host is found in a DNS Blacklist: Log and reject message
Custom SMTP error response for rejected messages: Message rejected. Your mail server at %s was found in the DNS Blacklist at %s. Please visit their site for removal instructions.

3. I would also recommend using a antivirus/antispam third party tool of some kind. BUT it should be IN ADDITION to the above. You don't want to accept known bad messages and use up cycles filtering them, when you could just reject the connection to begin with.

Be sure to restart the router after making any of the above changes.


Feedback response number WEBB82RQ9V created by ~Bill Nonweplopobu on 02/17/2010

SMTP Attack (~Frank Prenibur... 15.Feb.10)
. . Use a hosted service like Posini. (~Fritz Ekfoober... 17.Feb.10)
. . relaying and public blacklists (~Bill Nonweplop... 17.Feb.10)




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