Outlook Express and STARTTLS

[Robert Moskowitz]

On 11/21/2014 03:38 PM, Gedalya wrote:
> On 11/21/2014 03:32 PM, Robert Moskowitz wrote:
>>
>> On 11/21/2014 03:09 PM, Reindl Harald wrote:
>>>
>>> Am 21.11.2014 um 20:59 schrieb Robert Moskowitz:
>>>> I have one user that uses Outlook Express.   Not only do I not use 
>>>> it, I
>>>> don't have any systems here that can easily use it.  I bit of a 
>>>> challenge.
>>>>
>>>> I am strictly enforcing STARTTLS or TLS for SMTP/POP3/IMAP 
>>>> connections.
>>>>
>>>> SO far a google search has not shown me how to configure this for a
>>>> user.  Anyone have a pointer to instructions so I can talk the person
>>>> through the changes?
>>>
>>> it can't as well as Outlook for POP3/IMAP
>>> you need 993/995 *without* STARTTLS - period
>>>
>>> and that's why a sane mailserver needs to support 
>>> 110,143,993,995,587 *and* 465 to support every client, that won't 
>>> change in the near future
>>>
>> I missed 465; got the rest.  Will have to look THAT one up. Thanks 
>> for the tip, Harald.
> That's just implicit TLS for SMTP submission, instead of 587. OE needs 
> that.
>
Which is way IETF has made a major pushback against every transport 
wanting a second port number for TLS.  There just are not enough port 
numbers for this purpose.