On July 11, 2018 2:08:00 PM PDT, Sophie Loewenthal sophie@klunky.co.uk wrote:

Hi,

Just noticed an Android email client called K9 Mail is producing these entries in a server's dovecot log:

Jul 11 21:03:28 mx1 dovecot: imap(me@example.org): Connection closed (IDLE running for 0.001 + waiting input for 1728.597 secs, 2 B in + 10+0 B out, state=wait-input) in=353 out=2154 Jul 11 21:03:31 mx1 dovecot: imap(me@example.org): Connection closed (IDLE running for 0.001 + waiting input for 1731.069 secs, 2 B in + 10+0 B out, state=wait-input) in=389 out=1910

I cannot find out what this means after googling. Any ideas?

Best wishes, Sophie

K-9 uses IDLE connections to allow instant notifications upon mail receipt (akin to "push notifications" but without the need for cell carrier-specific mechanisms).

https://en.m.wikipedia.org/wiki/IMAP_IDLE

Nothing to worry about.

--Sean