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IMF and Junk mail not being sent to Outlook junk mail folder

We have a single windows sbs 2003 server running exchange. We have implemented IMF with level 7 set in Block messages with SCL greater than...we have also set this to archive. This seems to be working great, as I can see the messages collecting in the archive folder. We have also set the level of 5 in the store Junk e-mail config. However we are using Outlook 2003 clients, and no junk mail ever appears in the junk mail folder. We are still getting obvious junk mail arriving in users mail boxes, so does anyone have any ideas as to why lower SCL rated junk mail is not being directed to their junk mail folder?

scadieux

It might be because of the email delivery protocol. IMF only scans inbound SMTP traffic. This is very often the problem with Small Business Server users. Emails downloaded by the 'Microsoft Connector for POP3 Mailboxes' go through unfiltered. There's a couple of possibilities. The following webpage will probably help you:
http://www.exchangeinbox.com/articles/022/imf_notprocess.htm

nigelbeatson

ASKER

Thankyou for your reply. I can confirm that the IMF is working in part, as I can see dozens of spam e-mails redirected to the system spam folder. It is the second level which does not seem to arrive in the clients outlook 2003 spam mail folder. ie the high level SCL does get identified and we have chosen to archive these, however the lower level threshold which we have set at 5, does not direct e-mail into the individual users outlook spam mail folder. I can see several obvious spam messages which just go straight into the users inbox. Should we drop the secondary level to say 3?

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scadieux

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