Good. The options provided by Thunderbird are: None, STARTTLS and SSL/TLS. So I will select the last one.

Will I have to modify anything on the Dovecot side?

So far, my only modification to the file 10-mail.conf has been this:

mail_location = maildir:~/Mail

Raymond

On 11/10/2020 8:39 AM, A. Schulze wrote:

Am 10.11.20 um 06:42 schrieb Raymond Herrera:
I am preparing a new server, with Dovecot 2.2.36 and would like to know the 
currently recommended protocols. Should I stick to what I have? I would prefer 
to start with the easiest configuration possible, which I will revise later.

This is the command that I have been using to verify the server's functionality:
RFC 8314 suggest to prefer implicit TLS over STARTTLS
https://tools.ietf.org/html/rfc8314#section-3

modern clients work mostly fine with that recommendation, too.

Andreas

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