Dovecot 2.3.0 TLS

[Hauke Fath]

All,

our dovecot installation provides a bundle of intermedia CA 
certificates using the ssl_ca option.

2.3.0 does not supply the bundle, resulting in various clients either 
complaining about an unverifiable server cert, or quietly not 
connecting. The log has

Jan  5 17:01:46 Bounce dovecot: imap-login: Disconnected (no auth 
attempts in 0 secs): user=<>, rip=XXX, lip=YYY, TLS handshaking: 
SSL_accept() failed: error:14094416:SSL routines:SSL3_READ_BYTES:sslv3 
alert certificate unknown: SSL alert number 46, 
session=<uKK/kAlia+GCUyU5>

We fixed the issue by downgrading to 2.2.33.2.

Cheerio,
hauke

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