SSL cert:
http://consul.startssl.com

IMAP4 SSL
http://www.isaserver.org/img/upl/exchangekit/2003secureimap4/2003secureimap4.htm

OMA
http://www.petri.co.il/configure_oma.htm

HTTPS:
http://www.petri.co.il/configure_exchange_2000_2003_to_receive_email_for_other_domains.htm

ORF:
http://system-administrators.info/?p=1680

http://kerio-rus.ru/index.php?option=com_content&task=view&id=94&Itemid=79