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| Server Name
and version |
SMTP (AUTH command) | POP3 | IMAP4 | IMSP/ACAP | Comments |
| Isode M-Switch (MTA) + M-Box | CRAM-MD5,
DIGEST-MD5, PLAIN, NTLM, GSSAPI, SRP, EXTERNAL |
- | CRAM-MD5,
DIGEST-MD5, PLAIN, NTLM, GSSAPI, SRP, OTP |
N/A | Uses Cyrus-SASL |
| Sendmail | Since 8.10:
CRAM-MD5, DIGEST-MD5, PLAIN, LOGIN, GSSAPI, Since 8.12: + EXTERNAL |
N/A | N/A | N/A | Uses Cyrus-SASL |
| Postfix (since snapshot-20000314 or release-20010228) | CRAM-MD5,
DIGEST-MD5, PLAIN, LOGIN, GSSAPI |
N/A | N/A | N/A | Uses Cyrus-SASL |
| qmail | LOGIN,
PLAIN, CRAM-MD5 |
N/A | N/A | N/A | SMTP AUTH is available as a patch. More information here. The updated patch is here. |
| Exim 3.10 | CRAM-MD5 | N/A | N/A | N/A | |
| UW 4.6 Beta | N/A | LOGIN
CRAM-MD5, GSSAPI (KERBEROS V5), |
LOGIN
CRAM-MD5, GSSAPI (KERBEROS V5), |
N/A | |
| Cyrus v2.2.9 | (experimental serv.)
KERBEROS_V4, CRAM-MD5 |
CRAM-MD5,
DIGEST-MD5, PLAIN, NTLM, KERBEROS_V4, GSSAPI, SRP, OTP, EXTERNAL |
CRAM-MD5,
DIGEST-MD5, PLAIN, NTLM, KERBEROS_V4, GSSAPI, SRP, OTP, EXTERNAL |
KERBEROS_V4/ ANONYMOUS | Uses Cyrus-SASL |
| MessagingDirect M-Store 3.X/4.X | N/A |
PLAIN CRAM-MD5, KERBEROS_V4, DIGEST-MD5, GSSAPI |
PLAIN CRAM-MD5, KERBEROS_V4, DIGEST-MD5, GSSAPI |
N/A | Previously known as SMS (Simeon Message Service) |
| Communigate Pro | PLAIN,
LOGIN, CRAM-MD5, DIGEST-MD5 |
PLAIN,
LOGIN, CRAM-MD5, DIGEST-MD5, NTLM, MSN |
PLAIN,
LOGIN, CRAM-MD5, DIGEST-MD5, NTLM MSN |
PLAIN,
LOGIN, CRAM-MD5, DIGEST-MD5, NTLM |
DIGEST-MD5 is supported since 3.4.4,
NTLM is implemented in 3.5b1 |
| Sun Internet Mail Server 4.0 | PLAIN | PLAIN | PLAIN | N/A | |
| Netscape Messenger 3.62 | LOGIN | LOGIN | LOGIN | N/A | |
| Microsoft Exchange Server V5.5 | LOGIN | PLAIN,
NTLM, DPA |
PLAIN,
NTLM, DPA |
N/A | NTLM and DPA are not yet registered with IANA |
| Process Software PMDF 6.2 | DIGEST-MD5,
CRAM-MD5, PLAIN, LOGIN |
DIGEST-MD5,
CRAM-MD5, PLAIN, LOGIN |
DIGEST-MD5,
CRAM-MD5, PLAIN, LOGIN |
N/A | Also supports APOP |
| Eudora WorldMail 2.0 | - | CRAM-MD5 | CRAM-MD5 | N/A / PLAIN, CRAM-MD5 | ACAP Server is not true ACAP, but ACAP-like |
| Eudora Internet Mail Server 2.2.2 | CRAM-MD5 | - | - | N/A / CRAM-MD5 | POP3 supports APOP. ACAP Server is not true ACAP, but ACAP-like |
| CentreNET AT-Mail Server v1.1 | ? | ? | CRAM-MD5 | ? | |
| cc:Mail IMAP Connector | N/A | N/A | CRAM-MD5 | N/A | |
| VOPmail
1.0.174 |
LOGIN,
NTLM, CRAM-MD5, SCRAM-MD5 |
LOGIN,
NTLM, CRAM-MD5, SCRAM-MD5 |
LOGIN,
NTLM, CRAM-MD5, SCRAM-MD5 |
N/A | |
| CDC Intrastore | - | ANONYMOUS,
CRAM-MD5, SKEY |
ANONYMOUS,
CRAM-MD5, SKEY |
POP3 also supports APOP. | |
| Software.com InterMail 4.1 | PLAIN | PLAIN | PLAIN | N/A | |
| Critical Path (formerly Isocor) InScribe Messaging Server (formerly N-Plex) 5.1 | LOGIN
CRAM-MD5 |
CRAM-MD5 | CRAM-MD5 | N/A | |
| Infinite Interchange 3.51 | - | - | LOGIN
CRAM-MD5 |
N/A | |
| MailSuite SQL Enterprise 2.1.5 | CRAM-MD5 | CRAM-MD5 | CRAM-MD5 | N/A | |
| Open Mail 5.10 | - | - | - | N/A | |
| QPopper 3.0 | N/A | SCRAM, APOP | N/A | N/A | |
| VPOP3 | LOGIN | PLAIN,
LOGIN, APOP |
PLAIN,
LOGIN |
N/A | Plan to add CRAM-MD5 to all supported protocols |
| Hermes Mail Server | CRAM-MD5 | - | N/A | N/A | |
| IPSwitch IMail Server 7.13 | LOGIN,
CRAM-MD5 |
PLAIN,
LOGIN, CRAM-MD5 |
PLAIN,
LOGIN, CRAM-MD5 |
N/A | POP3 supports APOP |
| Mercur 3.0 | - | - | - | N/A | |
| NT Mail 3.03C | - | - | - | N/A | |
| Hamster server/proxy |
LOGIN,
PLAIN (only with TLS), CRAM-MD5, CRAM-SHA1 |
LOGIN,
PLAIN (only with TLS), CRAM-MD5, CRAM-SHA1 |
LOGIN,
PLAIN (only with TLS), CRAM-MD5, CRAM-SHA1 |
N/A | Also supports old SMTP AUTH syntax (Auth=LOGIN).
POP3 supports APOP. |
| WinGate server/proxy |
LOGIN,
PLAIN, CRAM-MD5, NTLM |
PLAIN, CRAM-MD5, NTLM |
LOGIN,
PLAIN, CRAM-MD5, NTLM |
N/A | Also supports APOP |
| BatPost! server |
LOGIN,
PLAIN, CRAM-MD5, NTLM |
LOGIN,
PLAIN, CRAM-MD5, NTLM |
LOGIN,
PLAIN, CRAM-MD5, NTLM |
N/A | Also supports APOP |
| Server Name and version | LDAP SASL | Comments |
| LDAPv3 Distributed Directory Server | CRAM-MD5 | |
| iPlanet Directory Server | EXTERNAL | |
| Microsoft Active Directory | GSSAPI,
GSS-SPNEGO |
|
| OpenLDAP 2.0.7 | all CMU SASL library can do | |
| IBM SecureWay Directory Server | CRAM-MD5,
GSSAPI, EXTERNAL |
| Legend |
| * - mechanism will be supported in the next release |
| ? - No Information |
| - - Server doesn't support any SASL |
| N/A - Not Applicable (i.e. such server doesn't exist) |
| recent updates are marked purple |
If you want to add/update information, send the author an email
Table of contents for IETF standard related pages
List composed by Alexey Melnikov.
Feel free to send him updates/additions/comments to this list.
Information published on this page is for developers use only. It is
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There is no guaranty that information on this page is accurate and/or up-to-date.
Last updated 10 May 2006
Thank you to all people who sent me updates