STARTTLS feature not easy to figure out

[pvanhoof]

It's quite hard to figure out that in .offlineimaprc you need to do:

remotehost = mail.domain.ext
ssl = no
starttls = yes
remoteport = 143

To use STARTLS on 143/imap instead of wrapped SSL 993/imaps. While increasingly IMAP server softwares are no longer enabling by default the 993 wrapped SSL. Case example is Cyrus IMAP which by default doesn't enable it.

I think that when ssl = yes and starttls = yes that offlineimap could give the user a warning that it'll pick wrapped SSL instead of STARTLS on 143. And I think if port 993 is closed, it could retry on 143 with STARTTLS.

[xeruf]

software is moving from SSL to STARTTLS? That seems very odd.