tlsv1 alert unknown ca: SSL alert number 48

[Alex JOST]

Am 29.01.2017 um 00:21 schrieb Maurizio Caloro:
>
> Hello together
>
> Please i'am new to this list, i have already installed Postfix and
> Dovecot last version from Internet
> but i have the porblem that the mail do not arive, and with me Cert, i
> have read on the Dovecot site,
> but i don't have me found me solutions to fix this. "tlsv1 alert unknown
> ca: SSL alert number 48"
>
> Jan 28 22:42:44 dovecot: imap-login: Disconnected (no auth attempts in 0
> secs): user=<>, rip=192.168.1.16, lip=192.168.1.3, TLS: SSL_read()
> failed: error:14094418:SSL routines:ssl3_read_bytes:tlsv1 alert unknown
> ca: SSL alert number 48, session=

Is this a self signed cert? Did you import it into Thunderbird? Does the 
common name match?

Enabling the Error Console in Thunderbird (Menu => Extras) might give 
you a better clue.

-- 
Alex JOST