Possible bug?
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I'm about to pull my hair out for a day even if I make sure all outgoing firewall rules are correct. And later I turn off outgoing firewall completely, and it still doesn't work.
Then I found that if Proxy, Pop3, Global setting's email scanner is turned on on Green interface (even without virus scanner / spam filter turned on), then email client was not able to download any email from the email server using POP3 over SSL (port 995), all it gets is a quick timeout and error 0x800ccc0f.
Yet standard POP3 (110) works completely fine with email scanner on or off.
Endian v2.3