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Mail server HTTPS protection

Hi

As many of you, I'm a long time user of UTM from back when it was Astaro. I used to have a login here but it's been so long since I needed help that I've lost it Slight smile

I'm now hosting my own mail server, I've experience of using MS Exchange but want to try something else.

I've played with a few Linux mailservers, iRedmail, Zimbra, Mail-in-a-box which is what I ended up with.

I have SMTP through the proxy and spam / av scanning etc. working.  Webmail and mobile is working both internally and externally, however, I've blocked HTTP/S through the firewall at the moment as I'm not sure of the best practice for HTTP/S access to protect the server. Can anyone give me any advice or pointers please?

Thank you.



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