Author Topic: Avast blocks mail access in Thunderbird  (Read 3755 times)

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Offline glee018b

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Avast blocks mail access in Thunderbird
« on: August 19, 2018, 09:07:51 AM »
Avast prevents email reception in Thunderbird 52.9.1 (32-bit) (latest) even with MAIL SHIELD uninstalled. The shields even block access to Avast Forum unless I stop the shields. This is too much. I'll have to find another antivirus program.
NOTE: verification image very hard to read!

Offline Asyn

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Re: Avast blocks mail access in Thunderbird
« Reply #1 on: August 19, 2018, 09:22:45 AM »
- Which Avast..? (Free/Pro/IS/Premier)
- Which version..?
- OS..? (32/64 Bit..? - which SP/Build..?)
- Other security related software installed..?
- Which AV(s) did you use before Avast..?

PS: Captcha is only needed for your first 3 posts. (Spam protection)
Win 8.1 [x64] - Avast PremSec 21.2.2450.Beta#1 [UI.599] - EEK - Firefox ESR 78.8 [NS/uBO/PB] - TB 78.8
Avast-Tools: Secure Browser 88.2 - Cleanup P 21.1 - SecureLine 5.9 - Driver Updater 21.1 - CCleaner 5.77
Avast Wissenswertes (Downloads, Anleitungen & Infos): https://forum.avast.com/index.php?topic=60523.0

Offline Alpha-UMi

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Re: Avast blocks mail access in Thunderbird
« Reply #2 on: August 19, 2018, 11:40:43 AM »
Thunderbird CAN work perfectly with Thunderbird, but the process is a bit complicated compared to other email clients. I remember the process only in general terms.

- You must create an avast! certificate using avast! itself, the button is somewhere in the email UI
- You must add the certificate in Thunderbird... can't remember where the option is, somewhere in Security and Certificates.

Done!

Sorry but, I repeat, cannot remember the process in detail.
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Offline alanb

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Re: Avast blocks mail access in Thunderbird
« Reply #3 on: August 19, 2018, 12:58:19 PM »
Does it work if you go to:

 Settings -> Components -> Mail Shield -> Customize -> SSL scanning

and uncheck "Scan SSL connections"?

If not, I'll try to find time to detail the procedure for adding Avast's certificate to TBird (it is a bit of a performance!).


Edit: BTW, the latest Thunderbird is 60.0.
« Last Edit: August 19, 2018, 01:02:10 PM by alanb »

Offline Asyn

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Re: Avast blocks mail access in Thunderbird
« Reply #4 on: August 19, 2018, 01:05:27 PM »
Guys, before we dig deeper we need to know about the basic setup.
Win 8.1 [x64] - Avast PremSec 21.2.2450.Beta#1 [UI.599] - EEK - Firefox ESR 78.8 [NS/uBO/PB] - TB 78.8
Avast-Tools: Secure Browser 88.2 - Cleanup P 21.1 - SecureLine 5.9 - Driver Updater 21.1 - CCleaner 5.77
Avast Wissenswertes (Downloads, Anleitungen & Infos): https://forum.avast.com/index.php?topic=60523.0

Offline DavidR

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Re: Avast blocks mail access in Thunderbird
« Reply #5 on: August 19, 2018, 04:33:35 PM »
Guys, before we dig deeper we need to know about the basic setup.

Agreed without more detailed information we are just speculating.

There is more going on here than Avast blocking mail access in Thunderbird, especially since even with Mail Shield uninstalled, it still doesn't work.  Added to that 'blocking access to the forums' unless the shields are disabled, as in why it would block access to the forum but not the rest of (or other sites also) the internet.
Windows 10 Home 2004 64bit/ Acer Aspire F15/ Intel Core i5 7200U 2.5GHz, 8GB DDR4 memory, 256GB SSD, 1TB HDD/ avast! free 21.1.2449 (build 21.1.5968.561) UI-1.0.597/ WinPatrol+/ Firefox, uBlock Origin, uMatrix/ MailWasher Pro/ Avast! Mobile Security

Offline alanb

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Re: Avast blocks mail access in Thunderbird
« Reply #6 on: August 19, 2018, 05:32:01 PM »
Quote
even with Mail Shield uninstalled, it still doesn't work

My bad - completely missed that - sorry guys.

Definitely need more info.