imap4s timeouts and closed connections

[tech-lists]

Hi,

context: Mutt 1.12.1 / freebsd12-stable

I'm using fastmail for all my mail and I access it with imap4s. Lately
I've been seeing timeouts, or a mailbox will just close [1], and yet my

really had any problem with mutt in an imap context.

I have the following in my .muttrc:

set mail_check=90
set imap_keepalive=30
set timeout=15

I can be just reading mail in the mailbox then "connection closed"

How can I fix? I've done some searching about this but can't find much
for my version of mutt and what I did find was inconclusive. But it's an
issue that seems to come up repeatedly.

[1] doubly annoying because my lastread isn't recorded ie the mailbox
closes without synching.

thanks,
--
J.

connection (fibre) is stable. I've been using imap with mutt ever since direct imap support became available, and this is the first time I've

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