[imp] Re: pop login failure (not really)

[Ross Simpson]

I've solved my own problem -- just posting back the answer here in case 
anyone else encounters it.

The problem itself is somewhere between c-client and the qmail pop3 server.

The pop3 connection mechanism in c-client first sends a CAPA command, 
then the username and password, then the CAPA command again.  My qmail 
pop3 server doesn't respond to the second CAPA command:

$ telnet localhost 110
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
+OK <176.1075747447 at mail.seventh.net>
CAPA
+OK Capability list follows
TOP
UIDL
LAST
USER
APOP
.
user rsimpson at cherryvale.org
+OK
pass .....
+OK
capa
stat
+OK 5 3912
quit
+OK
Connection closed by foreign host.


CAPA is described in RFC 2449.  It is stated there that CAPA is 
available during both authentication and transaction states, and that it 
should always be followed by either a success (+OK) or failure (-ERR) 
code.

My server is not responding to the CAPA command issued during the 
transaction state.  I can still issue commands afterwards, but c-client 
is expecting a response from the second CAPA, never gets one, and 
eventually times out.

My fix for this was to comment out the final call to pop3_capa, at the 
very bottom of pop3_auth (in src/c-client/pop3.c).  After doing that, 
IMP works great.

This is using imap-2002e and qmail-1.03.


Ross




Ross Simpson wrote on 1/30/2004, 2:54 PM:

 > Hello,
 >
 > I'm trying to get IMP 3.2.2 working (with Horde 2.2.4), and am having a
 > strange problem.  I've googled, looked at the FAQ, list archives, etc.,
 > but haven't found anything that solves the problem.
 >
 > The problem is, when I attempt to login to IMP, a successful POP3 login
 > occurs, but IMP waits a minute or so, then says that the login failed.
 >
 > This is what I get from the horde log:
 >
 > Jan 30 14:47:15 HORDE [error] [imp] FAILED LOGIN 64.236.189.116 to
 > localhost:110[pop3] as rsimpson at cherryvale.org [on line 284 of
 > "/home/www/cherryvale.org/www/horde/imp-3.2.2/lib/IMP.php"]
 >
 >
 > But, looking at qmail's logs, I see this:
 >
 > Jan 30 14:46:15 [vpopmail] vchkpw: login success
 > rsimpson at cherryvale.org:127.0.0.1
 >
 >
 > I can successfully login to the pop server with the same username and
 > password:
 >
 > $ telnet localhost 110
 > Trying 127.0.0.1...
 > Connected to localhost.
 > Escape character is '^]'.
 > +OK <24795.1075496782 at mail.seventh.net>
 > user rsimpson at cherryvale.org
 > +OK
 > pass ....
 > +OK
 >
 >
 > Here's the applicable section from servers.php:
 >
 > $servers['pop'] = array(
 >      'name' => 'pop server',
 >      'server' => 'localhost',
 >      'protocol' => 'pop3',
 >      'port' => 110,
 >      'folders' => '',
 >      'namespace' => '',
 >      'maildomain' => 'cherryvale.org',
 >      'realm' => 'cherryvale.org',
 >      'preferred' => ''
 > )
 >
 >
 > I've tried variations on the connection string to imap_open() (as
 > suggested by the php man page):
 >
 > {localhost:110/pop3}
 > {localhost:110/pop3}INBOX
 > {localhost:110/pop3/notls}
 > {localhost:110/pop3/notls}INBOX
 >
 >
 > All the prerequisites for IMP and Horde are installed ok (says the
 > test.php pages).
 >
 >
 > I'm stuck.. not sure what's going on here.
 > Does anyone have any insight as to what's causing imap_open() to fail?
 >
 >
 > Thanks,
 > Ross
 >
 >
 >