[Dovecot] Thunderbird STARTTLS error

[Markus Fritz]

Am 09.05.2012 22:40, schrieb Ken Stevenson:
> On 2012-05-08 14:17, Markus Fritz wrote:
>> Hello,
>>
>> the error is still present:
>> May  8 19:47:18 opsys dovecot: imap-login: Disconnected (no auth
>> attempts): rip=82.113.119.140, lip=78.46.216.126
>>
>> Whenever I start a session with openssl to STARTTTL (Server:
>> mail.opsys.de) the handshake is successfull. Also I am able to login
>> to my account via 1 login.
>> In Thunderbird port 993 for SSL/TLS works correct, only STARTTLS on
>> port 143 isn't working properly.
>> The cert is Class 1 and signed by StartCom Ltd..
>> Dovecot.conf (for viewable reasons of this mail pasted):
>> http://pastie.org/private/bmrymyuo16ohzxdahf0nq
>> And here openssl output:
>> http://pastie.org/private/3rpgll2s7hblev9ozpcq8w
>> Note the 'Verify return code: 21 (unable to verify the first
>> certificate)' in the output...
>>
>> Thanks for helping, I am working on this problem since 3 days.
>>
>> Kind regards
>>
>> Markus Fritz
>
> How about this:
>
> Note: If you receive an error that looks like:
>
>  454 TLS not available due to temporary reason', Port: 25,
> Secure(SSL): Yes, Server Error: 455, Error Number: 0x800CCC7F
>
> or anything similar, it is because your Norton AntiVirus Email
> Scanning or other Anti-Virus software is scanning your outgoing email.
> Shut off the 'Scan outgoing Email' option and it should work.
>
> It came from here:
>
> https://cs.stanford.edu/computing-guide/email/client-settings
Sorry but: oh my god
Thanks, really. Days of working and this simple resolution. I am running
Avira and EMail scanning was turned on.
Now it's working perfectly.
That made my day.

-- 
Markus Fritz
Administration