Hi Serik,
Please see the following post:
http://forums.comodo.com/antispam/lull_is_cas_forum_activity-t14273.0.htmlThe current version of AntiSpam does not support the IMAP protocol. Even though you have changed the port number the software does not understand the commands sent by IMAP which are distinctly different from those of POP3.
IMAP support is already well underway and will be added to future versions of CAS.
Kind Regards,
Shane.