1 **********************************************
2 IMAP AND SMTP AUTHENTICATION WITH SQUIRRELMAIL
3 Preliminary documentation - 20 Nov 2002
4 Chris Hilts chilts@birdbrained.org
5 **********************************************
7 Prior to SquirrelMail 1.3.3, only plaintext logins for IMAP and SMTP were
8 supported. With the release of SquirrelMail 1.3.3, support for the
9 CRAM-MD5 and DIGEST-MD5 auth mechanisms has been added. TLS support has
10 also been added. It is possible to use different methods for both IMAP and
11 SMTP. TLS is able to be enabled on a per-service basis as well.
12 Unless the administrator changes the authentication methods, SquirrelMail
13 will default to the "classic" plaintext methods, without TLS.
19 * SquirrelMail 1.3.3 or higher
20 * The mhash extension for PHP. (Debian users: You're lucky. Type 'apt-get
21 install php4-mhash' and you're done.)
24 * SquirrelMail 1.3.3 or higher
26 * The "STARTTLS" command is NOT supported. The server you wish to use TLS
27 on must have a dedicated port listening for TLS connections. (ie. port
28 993 for IMAP, 465 for SMTP)
33 All configuration is done using conf.pl, under main menu option #2.
38 DIGEST-MD5 has three different methods of operation. (qop options "auth",
39 "auth-int" and "auth-conf"). This implementation currently supports "auth"
40 only. Work is being done to add the other two modes.
42 DIGEST-MD5 _may_ fail when authenticating with servers that supply more
43 than one "realm". I have no servers of this type to test on, so if you do
44 and it fails, let me know! (A big help would be for you to telnet to your
45 server, start a DIGEST-MD5 auth session, and include the challenge from the
46 server in your bug report.)
48 To get the challenge with IMAP:
49 telnet <your server> imap
51 A01 AUTHENTICATE DIGEST-MD5
52 <copy the gobbledygook that the server sends - this is what I need>
54 [server says auth aborted]
56 [server says goodbye, closes connection]
58 To get the challenge with SMTP:
59 telnet <your server> smtp
60 [server sends some sort of "hello" banner]
62 [server will probably list a bunch of capabilities]
64 <copy the gobbledygook that the server sends - this is what I need>
66 [server says auth aborted]
68 [server says bye, closes connection]