[Dovecot] Windows 8 issues (using Live/Outlook)

[Eriberto]

Hi!

I am trying to make Windows 8 using Live 2012 and Outlook 2010 login
in Dovecot POP3s. However, I receive this message in log:

Feb 28 07:32:05 ipanema dovecot: pop3-login: Disconnected (no auth
attempts in 0 secs): user=<>, rip=10.0.0.10, lip=10.0.0.1, TLS
handshaking: Disconnected, session=<joP78nTz9ACsFQAF>

Note that user is sent as blank and this is the only log line. I used
debug mode too:

Feb 28 09:07:07 ipanema dovecot: pop3-login: Debug: SSL: elliptic
curve secp384r1 will be used for ECDH and ECDHE key exchanges
Feb 28 09:07:07 ipanema dovecot: pop3-login: Debug: SSL: elliptic
curve secp384r1 will be used for ECDH and ECDHE key exchanges
Feb 28 09:07:07 ipanema dovecot: pop3-login: Debug: SSL: where=0x10,
ret=1: before/accept initialization [10.0.0.10]
Feb 28 09:07:07 ipanema dovecot: pop3-login: Debug: SSL: where=0x2001,
ret=1: before/accept initialization [10.0.0.10]
Feb 28 09:07:07 ipanema dovecot: pop3-login: Debug: SSL: where=0x2001,
ret=1: SSLv3 read client hello A [10.0.0.10]
Feb 28 09:07:07 ipanema dovecot: pop3-login: Debug: SSL: where=0x2001,
ret=1: SSLv3 write server hello A [10.0.0.10]
Feb 28 09:07:07 ipanema dovecot: pop3-login: Debug: SSL: where=0x2001,
ret=1: SSLv3 write certificate A [10.0.0.10]
Feb 28 09:07:07 ipanema dovecot: pop3-login: Debug: SSL: where=0x2001,
ret=1: SSLv3 write server done A [10.0.0.10]
Feb 28 09:07:07 ipanema dovecot: pop3-login: Debug: SSL: where=0x2001,
ret=1: SSLv3 flush data [10.0.0.10]
Feb 28 09:07:07 ipanema dovecot: pop3-login: Debug: SSL: where=0x2002,
ret=-1: SSLv3 read client certificate A [10.0.0.10]
Feb 28 09:07:07 ipanema dovecot: pop3-login: Debug: SSL: where=0x2002,
ret=-1: SSLv3 read client certificate A [10.0.0.10]
Feb 28 09:07:07 ipanema dovecot: pop3-login: Warning: SSL failed:
where=0x2002: SSLv3 read client certificate A [10.0.0.10]
Feb 28 09:07:07 ipanema dovecot: auth: Debug: Loading modules from
directory: /usr/lib/dovecot/modules/auth
Feb 28 09:07:07 ipanema dovecot: auth: Debug: Read auth token secret
from /var/run/dovecot/auth-token-secret.dat
Feb 28 09:07:07 ipanema dovecot: auth: Debug: auth client connected (pid=8138)
Feb 28 09:07:07 ipanema dovecot: pop3-login: Disconnected (no auth
attempts in 0 secs): user=<>, rip=10.0.0.10, lip=10.0.0.1, TLS
handshaking: Disconnected, session=<QDraRnbzMwCsFQAF>

Analysing the traffic with tshark, I can see:

0.007163   10.0.0.10 -> 10.0.0.1   TLSv1.2 331 Certificate, Server Hello Done

I am using Dovecot 2.2.9 and I think it is TLS compatible. External
(non-MS) clients, as Mozilla Thunderbird and Sylpheed, are working
fine.

Can someone point me a light?

# 2.2.9: /etc/dovecot/dovecot.conf
# OS: Linux 3.2.0-4-amd64 x86_64 Debian 7.4 ext4

Thanks in advanced.

Regards,

Eriberto