03814228 |
1 | ********************************************** |
2 | IMAP AND SMTP AUTHENTICATION WITH SQUIRRELMAIL |
3 | Preliminary documentation - 20 Nov 2002 |
4 | Chris Hilts chilts@birdbrained.org |
5 | ********************************************** |
6 | |
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. |
14 | |
15 | REQUIREMENTS |
16 | ------------ |
17 | |
18 | CRAM/DIGEST-MD5 |
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.) |
22 | |
23 | TLS |
24 | * SquirrelMail 1.3.3 or higher |
25 | * PHP 4.3.0 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) |
29 | |
30 | CONFIGURATION |
31 | ------------- |
32 | |
33 | All configuration is done using conf.pl, under main menu option #2. |
34 | |
35 | KNOWN ISSUES |
36 | ------------ |
37 | |
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. |
41 | |
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.) |
47 | |
48 | To get the challenge with IMAP: |
49 | telnet <your server> imap |
50 | [server says hello] |
51 | A01 AUTHENTICATE DIGEST-MD5 |
52 | <copy the gobbledygook that the server sends - this is what I need> |
53 | * |
54 | [server says auth aborted] |
55 | A02 LOGOUT |
56 | [server says goodbye, closes connection] |
57 | |
58 | To get the challenge with SMTP: |
59 | telnet <your server> smtp |
60 | [server sends some sort of "hello" banner] |
61 | EHLO myhostname |
62 | [server will probably list a bunch of capabilities] |
63 | AUTH DIGEST-MD5 |
64 | <copy the gobbledygook that the server sends - this is what I need> |
65 | * |
66 | [server says auth aborted] |
67 | QUIT |
68 | [server says bye, closes connection] |
69 | |
70 | [End] |