Outlook Express and STARTTLS

Reindl Harald h.reindl at thelounge.net
Fri Nov 21 22:50:13 UTC 2014

Am 21.11.2014 um 23:35 schrieb Oscar del Rio:
> On 11/21/14 04:29 PM, Reindl Harald wrote:
>> the situation for Outlook (not OE) and TLS is not much better
>> some versions support STARTTLS on SMTP but not for IMAP/POP3 ...
> Outlook (at least since version 2010) does support STARTTLS for
> IMAP/POP3 on port 143.
> But they don't call it STARTTLS but "TLS". And they call "SSL" to TLS on
> port 993/995
> With Outlook configured for "TLS" on port 143:
> outlook -> dovecot: a0gk CAPABILITY
> dovecot -> outlook: * CAPABILITY IMAP4rev1...STARTTLS...
> outlook -> dovecot: h96q STARTTLS
> dovecot -> outlook: h96q OK Begin TLS negotiation now
> (TLS starts)

for IMAP yes
for POP *no*

try it out - i have testing VM's for Outlook 2003/2007/2010 and on all 
of them IMAP/POp3 accounts

hence it is a crap but that fact don't solve the problem that you need 
to support all ports and encryptions on the server side

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