Some Windows SMTP Server have problems with STARTTLS

6 msg	DSN relay host
1 msg	Restrict sender and from to one domain on outbo...
10 msg	Outbound postfix routing issue
25 msg	Problem with Black List
3 msg	Looking at new mail server layout
26 msg	why every minute: 'reload configuration /etc/po...
2 msg	myhostname parameter
17 msg	RBL problems with smarthost on private address ...
34 msg	Backscatting filter?
3 msg	how to setup postfix in 'deliver-only' mode?
7 msg	Slow queue configuration

Some Windows SMTP Server have problems with STA...
\ Ralf Hildebrandt (6 May 2008)
. \ Victor Duchovni (6 May 2008)
. . \ Ralf Hildebrandt (6 May 2008)
. . . \ Victor Duchovni (6 May 2008)
. . . . \ Ralf Hildebrandt (6 May 2008)
. . . . . \ Victor Duchovni (6 May 2008)
. . . . . . \ Ralf Hildebrandt (7 May 2008)
. . . . . . . \ Victor Duchovni (7 May 2008)
. . . . . . . . \ Ralf Hildebrandt (8 May 2008)
. . . . . . . . . \ Victor Duchovni (8 May 2008)
. . . . . . . . . . \ Ralf Hildebrandt (8 May 2008)
. . . . . . . . . . . \ Victor Duchovni (8 May 2008)
. . . . . . . . . . . . \ Ralf Hildebrandt (8 May 2008)
. . . . . . . . . . . . . \ Victor Duchovni (8 May 2008)
. . . . . . . . . . . . . . \ Ralf Hildebrandt (8 May 2008)
. . . . . . . . . . . . . . . \ Victor Duchovni (8 May 2008)
. . . . . . . . . . . . . . . . \ Ralf Hildebrandt (8 May 2008)

5 msg	For each check_ns or each check_mx, the value i...
4 msg	postfix and spf
2 msg	Password Validation in postfix
4 msg	catching some spam with warn_if_reject and reje...
9 msg	RFC: Check mail quota at a mail relay (backscat...
31 msg	GPS vs GLD (greylisting)
3 msg	Unmeant update from 2.2.10 to 2.5.1
27 msg	mailq lockups

Subject:	Some Windows SMTP Server have problems with STARTTLS
Group:	Postfix-users
From:	Ralf Hildebrandt
Date:	6 May 2008

From my log on mail.charite.de:

Apr 24 09:34:38 mail postfix/smtpd[18639]: connect from mailix.aer.de[212.202.242.130]
Apr 24 09:34:38 mail postfix/smtpd[18639]: SSL_accept error from mailix.aer.de[212.202.242.130]: -1
Apr 24 09:34:38 mail postfix/smtpd[18639]: lost connection after STARTTLS from mailix.aer.de[212.202.242.130]
Apr 24 09:34:38 mail postfix/smtpd[18639]: disconnect from mailix.aer.de[212.202.242.130]

The Windows admin of mailix.aer.de provided me with his log:

After STARTTLS he gets:
SSL negotation failed, error code 0x80090308

Also see: http://www.arschkrebs.de/bugs/log.jpg
for the whole log.

What could be the issue? What does 0x80090308 mean? And why did it
just break recently (between Apr 23rd and 24th)

--
Ralf Hildebrandt (Ralf.Hildebrandt) snickebo
Postfix - Einrichtung, Betrieb und Wartung Tel. +49 (0)30-450 570-155
http://www.arschkrebs.de