Hello,
after update to 11.1.2253 (2.2.2016), to my big surprise, avast disabled sending/receiving mail from my office email account on the entire home network - i.e. I was not able to neither send nor receive email from that account both on my laptop (Win7, Thunderbird) and my smartphone (Android OS). Prior to that date, everything was working fine, after that, the imap and smtp servers of my organization became unreachable. I have contacted our support and they eventually confirmed it is the issue of Avast mail scanner, so they can’t do anything for me. Gmail is working fine, however, to resolve the issue for my office mail, I had to disable SSL mail scanning entirely. Prior to that, I tried to add our imap and smtp servers into mail exceptions, but it made no difference. I tried to uninstall and reinstall the Avast several times, but it didn’t help either. The only difference between gmail and our office servers settings I noticed in thunderbird was, that gmail uses OAuth2 authentication while our office uses Encrypted Password method.
I am quite curious what could possibly cause this issue with the last update, and naturally also how to fix it. I would be also curious if Avast Pro version has this issue as well, as I am considering another protection software, preferably something that will cause fewer headaches.