How to configure EMAIL filter with external Exchange server

Greetings,

I have a Fortigate 70D behind a firewall in transparent mode. URL filtering is working ok and blocking bad sites.

I have configured the mail filter as in sshot. I have an external Exchange server that is connecting over.

But the emails with SPAM are still getting trough. I have addedd the filter to both policy traffics

internal-wan1

wan1-internal

Has anyone some idea and similar setup?

Thanks in advance.

New Member

Proxy base inspection mode is much better & efficient than flow base.

New Member

If you have an external Exchange server, e-mails are not going thru your FW, they are directly send/receive from it.

Your FW will only see client/server traffic (Outlook/OWA)

New Member

Hi,

i'm not so familiar with spam filtering but i've setup the similar environment once before, and it worked.

my policy was something like the below.

/*-----

set schedule "always" set service "POP3" "IMAP" set av-profile "spam-av" set spamfilter-profile "spam" set nat enable

-----*/

basically, what i did was create a new policy that allows POP and IMAP, and apply the filters(filters was set in proxy mode).

you might want to check if your clients use POP3 or IMAP(non ssl/tls version).

hope this would help

New Member

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