What imap ssl/auth settings work best with MS Outlook?

[Steve Dondley]

On 2021-04-29 09:40 AM, Steve Dondley wrote:
>> I am using Outlook without any problems what so ever.
>> 
>> It sounds to me like you are setting up Outlook to use port 465. In 
>> the
>> setup screen, set the port to either "25" or "587". I am using "587"
>> with "starttls" Your "incoming mail port" will depend on how you have
>> Dovecot configured. I use port "143" with "starttls" for Outlook. YMMV
>> depending on your configuration.
>> 
>> You might want to consider posting the output of "doveconf -a" and how
>> you have Outlook configured.
> 
> To get things working with the client I had to set
> "disable_plaintext_auth = no" and have them use port 143. Obviously,
> this is not ideal. I could not get 993 working at all with the
> client's version of outlook. However, on MS 365, outlook works just
> fine.
> 
> It's insane.

OK, I had changed "ssl = yes" to "ssl = required" so having 
"disable_plaintext_auth" is not such a big deal.

But I would still love to know why port 993 wasn't working at all for 
this client.