SMTP: Kerberos, CRAM-MD5, Login, Plain
IMAP: Kerberos, CRAM-MD5, Login, Plain, Clear
POP: Kerberos, CRAM-MD5, Clear
Succeed with Automated Testing and TDD
SMTP: Kerberos, CRAM-MD5, Login, Plain
IMAP: Kerberos, CRAM-MD5, Login, Plain, Clear
POP: Kerberos, CRAM-MD5, Clear