Disable POP (110) on external IP in bindings

Does anyone see any issues with disabling POP (port 110) on the external IP within Settings>Bindings? All our clients are internal, we do not want any email client send / receive abilities from outside of our internal network. Obviously we will be sending emails externally and receiving from external. What I am forgetting / missing here?

Heimir Eidskrem Replied

5/27/2020 at 2:56 PM

I would just block it in the firewall.

Kyle Kerst Replied

5/27/2020 at 4:29 PM

Employee Post Marked As Answer

You should be able to head over to Settings>Bindings>IP Addresses, select your IP addresses one at a time and uncheck the POP ports listed here to remove POP access from the interfaces SmarterMail is bound to. If this doesn't work I recommend submitting a support ticket so we can take a look, or blocking the port at the firewall level as the poster above pointed out. Let us know how it goes when you get a chance to test.

Kyle Kerst System/Network Administrator SmarterTools Inc. (877) 357-6278 www.smartertools.com

Jason Wilhelm Replied

5/27/2020 at 4:57 PM

Thanks Kyle I will give it a go again. I tried earlier and it still allowed POP access externally. I will do it again and restart smarter mail. We did previously have it turned off on the firewall but the firewall is managed by a 3rd party and I am not comfortable with just blocking on the firewall as we have had instances where updates/other changes has disabled the block without our knowledge. If the binding and restart does not work I will open a ticket. Thanks again all.

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