> If I can identify all the ip address sending mail to our server, can >I block all the imap ports on the firewall except from those ip?
Sending? No. IMAP is used for mailbox retrieval/management, not sending. >We currently use spamsoap so it should not be difficult to obtain the >range of ip addresses. All that SpamSoap can tell you are their source SMTP addresses (to which you should already be limiting your incoming SMTP traffic to, or else you're defeating the premise of using outsourced services). This doesn't tell you where your IMAP clients are connecting from. If, however, you could restrict your IMAP exposure in this way, of course you'd mitigate your exposure to hackers, by definition. And might I ask that people stop top-posting? This thread was getting crazy. --Sandy ------------------------------------ Sanford Whiteman, Chief Technologist Broadleaf Systems, a division of Cypress Integrated Systems, Inc. e-mail: [EMAIL PROTECTED] SpamAssassin plugs into Declude! http://www.imprimia.com/products/software/freeutils/SPAMC32/download/release/ Defuse Dictionary Attacks: Turn Exchange or IMail mailboxes into IMail Aliases! http://www.imprimia.com/products/software/freeutils/exchange2aliases/download/release/ http://www.imprimia.com/products/software/freeutils/ldap2aliases/download/release/ To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
