Well,
I've been doing some research, and it seems that msoutlook 2016 and 2019 doesn't quite have imap idle support. The odd part, is that when i had DBMail, it was IDLE'ing (i swear), Would dbmail send something different that make it work? It was an old version of dbmail, 2.3.7 i believe, from about 2012 or so.
And no, it wasn't the outlook options "send/receive", i had and have that disabled,
Don't have explanation, thunderbird IDLE's perfectly
-----Original Message----- From: dovecot <dovecot-bounces@dovecot.org> On Behalf Of Jorge Bastos via dovecot Sent: Tuesday, July 23, 2019 22:47 To: 'Dovecot Mailing List' <dovecot@dovecot.org> Subject: RE: Help with IMAP IDLE
Yes,
Escape character is '^]'.
- OK [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE LITERAL+ AUTH=PLAIN AUTH=LOGIN]
Yes, it works with other IMAP servers, why should not work with dovecot? It was working with DBMail, and it's working with an account from my Telco that used cirus-imap.
Have you verified (with rawlogs or tcpdump) that outlook even attempts IDLE? Is your dovecot advertising IDLE support in CAPABILITY?
Sami