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IPS blocks E-Mail Attachements

Der_Stift
Hi all,

I do have a nooby question [[:)]]  I recently installed an exchange and put that server behind the Sophos UTM 9. For some old (historical) reasons there is a Postfix reverse proxy between the Exchange and the UTM.

To the UTM config:
- SMTP Proxy is disabled (due to those Postfix reasons)
- The Exchange server (internal IP) is listed in the SMTP-Server List (IPS -> Tab Advanced)
- The Exchange Server is protected by Web Server Protection and there are some NAT Rules für IMAP etc.

The Point is, that I had to disable the IPS for the Exchange Server because the IPS blocked every E-Mail with an attachement. 

Did I missconfigured anything? 

Best Regards and many thanks [[:)]]


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Parents
  • 0
    Now that I see this again, I recall having to disable some IPS rules after upgrading a site to V9 as Excel and other email attachments were being blocked.

    Cheers - Bob
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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  • 0
    Now that I see this again, I recall having to disable some IPS rules after upgrading a site to V9 as Excel and other email attachments were being blocked.

    Cheers - Bob
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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