[imp] Problem with IMP-2.2.3 and pop3

[Alain Fauconnet]

Hello,

wicked-bg@world-online.no wrote:
> 
> Hi,
> 
> I'm setting up (or at least trying to set up) IMP but I've run into
> a problem with pop3 support. I've gotten so far that everything is
> installed, and I'm about to log on to check my mail. A tcp dump of
> IMP connecting to the pop3 server looks like this:
> 
> 18:32:05.897266 pop3server.110 > impwebserver.2797: P 1:35(34) ack 1 win 8760 (DF)
> 0x0000   4500 004a 6608 4000 f506 be7d 82f4 c7dc        E..Jf.@....}....
> 0x0010   d58e 40c8 006e 0aed 5cc1 d996 641b f08b        ..@..n..\...d...
> 0x0020   5018 2238 b8e5 0000 2b4f 4b20 496e 7465        P."8....+OK.Inte
> 0x0030   724d 6169 6c20 504f 5033 2073 6572 7665        rMail.POP3.serve
> 0x0040   7220 7265 6164 792e 0d0a                       r.ready...
> 18:32:05.897405 impwebserver.2797 > pop3server.110: P 1:7(6) ack 35 win 33580 (DF)
> 0x0000   4500 002e 3218 4000 4006 a78a d58e 40c8        E...2.@.@.....@.
> 0x0010   82f4 c7dc 0aed 006e 641b f08b 5cc1 d9b8        .......nd...\...
> 0x0020   5018 832c 924e 0000 4155 5448 0d0a             P..,.N..AUTH..
> 18:32:05.912341 pop3server.110 > impwebserver.2797: . ack 7 win 8760 (DF)
> 0x0000   4500 0028 6609 4000 f506 be9e 82f4 c7dc        E..(f.@.........
> 0x0010   d58e 40c8 006e 0aed 5cc1 d9b8 641b f091        ..@..n..\...d...
> 0x0020   5010 2238 95f2 0000 0000 0000 0000             P."8..........
> 18:32:05.912619 pop3server.110 > impwebserver.2797: P 35:85(50) ack 7 win 8760 (DF)
> 0x0000   4500 005a 660a 4000 f506 be6b 82f4 c7dc        E..Zf.@....k....
> 0x0010   d58e 40c8 006e 0aed 5cc1 d9b8 641b f091        ..@..n..\...d...
> 0x0020   5018 2238 8f96 0000 2d45 5252 2049 6e76        P."8....-ERR.Inv
> 0x0030   616c 6964 2063 6f6d 6d61 6e64 3b20 7661        alid.command;.va
> 0x0040   6c69 6420 636f 6d6d 616e 6473 3a20 5553        lid.commands:.US
> 0x0050   4552 2c20 5155 4954 0d0a                       ER,.QUIT..
> 18:32:05.912686 impwebserver.2797 > pop3server.110: P 7:13(6) ack 85 win 33580 (DF)
> 0x0000   4500 002e 3219 4000 4006 a789 d58e 40c8        E...2.@.@.....@.
> 0x0010   82f4 c7dc 0aed 006e 641b f091 5cc1 d9ea        .......nd...\...
> 0x0020   5018 832c 8d0a 0000 5155 4954 0d0a             P..,....QUIT..
> 
> And then on the console of the imp webserver I get this:
> Dec 15 18:32:05 impwebserver IMP[35970]: FAILED workstation to pop3server:110 as wicked-bg
> 
> In other words, when the connection is established imp sends "AUTH"
> to the popserver, which the popserver obviously does not like. I've
> tested with a lot of different pop3 servers, and none of them supports
> the "AUTH" command.

The UW ipop3d does (part of the UW IMAP package). I have the same kind
of errors here, but they do not prevent anything from working. Just some
noise in the log files. PHP IMAP package relies on c-client library,
which in turns seems to use (or try to use) a few UW-isms. Hence the
AUTH.

That's my understanding of the issue, anyway.

I don't understand why it would cause your login to fail, tough. It
might even be unrelated.

Cheers,
_Alain_