I am also affected by this bug (0.9.6-2). fail2ban fails to ban, replacing every "imap3" with "imap" in jail.conf fixes this for me.
- Bug#902752: fail2ban: should use imap2 not imap3 in ports list Mike Gerber
I am also affected by this bug (0.9.6-2). fail2ban fails to ban, replacing every "imap3" with "imap" in jail.conf fixes this for me.