IMAP Server Compliance

Fully compliant servers:

Server

Checkpoint

\Recent

Atomic flags

Expunge fetch

Expunge store

Failures

[http://www.dovecot.org/ Dovecot] 1.1.0+

Yes

Yes

Yes

Cached

Yes

0/34

[http://panda.com/imap/ Panda IMAP] 2008, mix format

Yes

Yes

Yes

Yes

Session

0/34

Non-compliant servers:

Server

Checkpoint

\Recent

Atomic flags

Expunge fetch

Expunge store

Failures

[http://www.dovecot.org/ Dovecot] 1.0.15

Yes

Unreliable

Bugs

Cached

Yes

1/34

[http://www.washington.edu/imap/ UW-IMAP] 2007b, mix format

Yes

Yes

Yes

Yes

Session

2/34

[http://www.isode.com/products/m-box.html Isode M-Box] 14.3a0

No

Unreliable

Yes

Cached

Ignored

6/34

[http://www.communigate.com/community/ CommuniGate Pro] 5.2.1

Yes

Yes

Yes

Cached (some)

No

8/34

[http://www.zimbra.com/ Zimbra] 5.0.5

Yes

Yes

Yes

Cached

No

8/34

[http://cyrusimap.web.cmu.edu/ Cyrus] 2.3.12p2

No

Unreliable

Bugs

Cached

Delayed

9/34

[http://www.sun.com/software/products/messaging_srvr/index.xml Sun Java Messenging Server] 6.3-0.15

No

Unreliable

Bugs

Yes

Delayed

9/34

[http://www.gmail.com/ GMail] 2008-06-24

No

Not implemented

Bugs

Yes

No (\Deleted flag expunges)

15/34

[http://www.courier-mta.org/imap/ Courier] 4.3.1

Yes

Unreliable

Yes

No

No

18/34

[http://www.citadel.org/ Citadel] 7.36

No

Unreliable

Yes

Yes

Session (flag changes are never seen by other sessions)

19/34

[http://www.dbmail.org/ dbmail] 2.3.3

Crashes too early to test. APPEND missing EXISTS replies.

Yes

Delayed (always)

?

Major problems with multiple connections (makes further testing difficult and MAY CAUSE ACCIDENTAL MAIL LOSS!):

Server

Checkpoint

\Recent

Atomic flags

Expunge fetch

Expunge store

Failures

[http://www.archiveopteryx.org/ Archiveopteryx] 3.0.0

?

?

?

No

No

EXPUNGEs are sent wrong

[http://www.ibm.com/software/lotus/products/notes/ IBM Domino] 8.0

No

Unreliable

?

?

No

16/34 - Too many EXPUNGEs are sent, EXISTS is dropped before sending EXPUNGEs, FETCHing with valid messagesets produce errors

[http://www.kerio.eu/kms_home.html Kerio Mail Server] 6.5.1

?

?

?

?

?

18/34 - EXPUNGEs are sent wrong

[http://drupal.zarafa.com/download-community Zarafa] 6.20 beta 3

-

-

-

-

-

19/34 - No EXPUNGEs are sent, EXISTS is used to drop message count