And what happens without SSL? e.g. telnet localhost 143
Without SSL it is no problem:
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telnet imap-server 143
Trying xxx.xxx.xxx.xxx...
Connected to imap-server.
Escape character is '^]'.
* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE
IDLE STARTTLS AUTH=PLAIN] Dovecot ready.
a login "username" "password"
a OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE
IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS MULTIAPPEND
UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE
QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS
SPECIAL-USE QUOTA] Logged in
b select inbox
* FLAGS (\Answered \Flagged \Deleted \Seen \Draft nonjunk $Forwarded)
* OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft nonjunk
$Forwarded \*)] Flags permitted
[...]
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