Try this script (replace with relevant user, password, & host) from the command line of the server. It will yield what version of TLS you're running.

<script>

#!/bin/bash

function imapscript () {
echo "a login $1 $2"
echo 'a logout'
sleep 1
echo 'quit'
}

user=some...@mydomain.com
pass=***********
host=mail.mydomain.com

imapscript "$user" $pass  | openssl s_client -crlf -connect $host:993

</script>

On 9/1/2021 6:29 PM, Eric Broch wrote:
Does your web mail work?
On Sep 1, 2021, at 5:12 PM, Jeff Koch <jeffk...@intersessions.com <mailto:jeffk...@intersessions.com>> wrote:

    Neither IMAP or IMAPS will connect - Jeff

    On 9/1/2021 6:16 PM, Eric Broch wrote:

    What protocol, IMAP, IMAPS, SMTPS...?

    On 9/1/2021 2:36 PM, Jeff Koch wrote:

    We have a customer trying to connect to his qmail-toaster email
    account using the MicroSoft Outlook app on an Android phone. He
    keeps getting bounced off with the message 'can't connect to
    server' or 'can't login'.  I did some research on the MS forums
    and apparently this Outlook app only connects with SSL (no
    STARTTLS) and TLS 1.2 or higher.  If the mailserver tries
    anything else first the connection is dropped.

    Is there any known work-around or configuration adjustment
    needed to get this Android Outlook app to work with the toaster.

    We're running qmail-1.03-2.2.qt.cdb.el7.x86_64.rpm

    Thanks, Jeff

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