Avast Internet Security is blocking a Mailbox in Mailbird

Avast Free Antivirus / Premium Security
1

Hello
I have a problem with Avast Internet Security latest version 19.8.2393.
It blocks incoming and outgoing emails of one mailbox only in mailbird.
This mailbox is using POP with SSL/TLS on port 995. And SMTP with SSL/TLS on port 465.

The error message from Mailbird when syncing is :
Authenticate as SSL/TLS client failed.
You might be connecting to non SSL/TLS port -or- using incorrect SSL/TLS version.
Consider using TLS 1.2: client.SSLConfiguration.EnabledSslProtocols = SslProtocols.Tls12;
Please examine the inner exception for details.

When I disable all Avast agents (10), emails are coming and outgoing.
If I disable agent by agent (only 8 seems disabled), emails are NOT coming. It is like they are blocked by a hidden agent.

Do someone have a hint to sort this out ?

Thanks a lot.

2

Same issue here,
If avast is on I cannot send or receive emails.
Version: 191026-0

3

Thank you for reporting the issue.

Could you please help us with investigation by providing some data?
Please enable debug logging (Menu > Settings > General > Troubleshooting > Enable debug logging).
Reproduce the issue.

Create a support package (https://support.avast.com/en-eu/article/Submit-support-file) and post the ID here.

Thank you very much,
Jakub

4

Hello
Mailbird did an update that solves the issue.
Thanks Mailbird !
Max

5

I still have (not always) the same problem. I cannot send email until I switch off Avast for 10 minutes. I’m using paid Avast and paid Mailbird.