If I remember rightly Outlook tends to want to connect to port 465
using Implicit TLS. (Which RFC 8314 now makes the preferred choice,
reversing the previous recommendation. So anyone running AuthSMTP on port
587 only might want to review their setup and add 465 to it.)
Cheers,
Mike B-)
On Sat, 9 Jun 2018 at 15:10, Jeremy Harris via Exim-users <
exim-users@???> wrote:
> It doesn't say whether it means STARTTLS or SSL-on-connect. In case
> it's the latter, port 465 is the usual place for that; keep STARTTLS
> on 587.
> --
> Cheers,
> Jeremy
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