Robert Chalmers writes:

dovecot-info.log May 11 09:27:45 imap-login: Info: Aborted login (no auth attempts in 0 secs): user=<>, rip=192.168.0.1, lip=192.168.0.15, session=<pXcBJ8oVbgDAqAAB>

When I try to connect using either the iOS Mail app, or Outlook mail app, nothing happens at al with ssl, and if I use plain login the iOS device tells me I have either the username or password wrong - which I haven't.

Some mail readers have auto-discover features that are rather stupid. If possible, manually configure the SSL style (TLS/STARTTLS) and port rather than letting it guess.

To diagnose whether it is some dovecot config error, you can manually connect with both flavours of SSL

openssl s_client -connect 192.168.0.15:993
... or ...
openssl s_client -starttls imap -connect 192.168.0.15:143

then if it gets past the SSL handshake,

a login <user> <password>

to test the authentication part. This will at least tell you whether it's a client side or server side issue. (However, since it is working with other client, it's probably a client side issue.)

Joseph Tam <jtam.home@gmail.com>