Hello,
Recently one supplier's reply email was geoblocked at the firewall and through my own ignorance and inexperience haven't yet fully resolved it in a manner that seems elegant and secure.
Question:
Is it typical to have 2 geoblock exceptions entries for smtp services (one for each direction, eg to and from Ireland)
- is it typical for enterprises to have Rx email server in North America and the Tx email server in Europe? How should the UTM be configured for this?
Should the UTM permit ALL port 25 traffic through the firewall and let the smtp proxy sort out the chaff from the wheat?
It makes sense to me that I should be able to email to almost any IP in the world and receive the same, I just unsure how to configure the UTM effectively.
I know the Firewall acts first, so it seems likely I could be dropping legitimate emails without knowledge (short of trawling through logs).
I am just looking to be safe and sensible with emails, I don't care so much about webtraffic, I can handle the bleating from the users about their favourite website not working, but not about their emails.
I have no test environment so I am loath to poke about too much.
Cheers
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