Author: Jeremy Harris Date: To: exim-users Subject: Re: [exim] Microsoft MUAs on port 587
On 07/09/2020 13:32, Mark Elkins via Exim-users wrote: > In the distribution template config file for exim
> (/etc/exim/exim.conf.dist), around line 200, I read... ... > # The standard port for this purpose is port 587, the "message submission"
> # port. See RFC 4409 for details. *Microsoft MUAs cannot be configured to**
> **# talk the message submission protocol correctly,* so if you need to
> support
> # them you should also allow TLS-on-connect on the traditional but
> # non-standard port 465.
>
> Is this still true of Microsoft MUAs ??
It's been fourteen years since that text was added, so quite
possibly it is no longer true.
Mind, the bit about 465 being nonstandard has *also* been overtaken.
