[courier-users] dying POP3 Connections

Hello,

I am not quite sure if this is the correct place to ask, if not just=20
give me a hint where to go.

Problem:
I am running a Gentoo box with courier-pop/imap in conjunction with=20
vpopmail and qmail. Works on several boxes pretty flawless.

One user now got a problem all in the sudden with a couple of email=20
accounts she is fetching (POP3). I have to point out, that this=20
email accounts are fetched by a couple of users.

The problem is, that under "The Bat" but even with a fresh installed=20
Thunderbird the connections dies after after a couple of seconds or=20
even at once.=20


1) On the Server Side the logs says:
Mar 6 20:42:04 [pop3d] LOGIN, user=3DNAME@DOMAIN, ip=3D[213.152.xx.yyy]
Mar 6 20:42:05 [pop3d] DISCONNECTED, user=3DNAME@DOMAIN,=20
ip=3D[213.152.xx.yyy], top=3D0, retr=3D1133, time=3D1

2) Ethereal on the client side says:
No. Time Source Destination =20
Protocol Info
1 0.000000 192.168.0.157 213.133.XX.YY TCP =20
1197 > pop3 [SYN] Seq=3D0 Ack=3D0 Win=3D64240 Len=3D0 MSS=3D1460
2 0.245949 213.133.XX.YY 192.168.0.157 TCP =20
pop3 > 1197 [SYN, ACK] Seq=3D0 Ack=3D1 Win=3D5840 Len=3D0 MSS=3D1460
3 0.245981 192.168.0.157 213.133.XX.YY TCP =20
1197 > pop3 [ACK] Seq=3D1 Ack=3D1 Win=3D64240 Len=3D0
4 0.285928 213.133.XX.YY 192.168.0.157 POP =20
Response: +OK Hello there.
5 0.308561 192.168.0.157 213.133.XX.YY POP =20
Request: CAPA
6 0.347841 213.133.XX.YY 192.168.0.157 TCP =20
pop3 > 1197 [ACK] Seq=3D19 Ack=3D7 Win=3D5840 Len=3D0
7 0.348898 213.133.XX.YY 192.168.0.157 POP =20
Response: +OK Here's what I can do:
8 0.355668 192.168.0.157 213.133.XX.YY POP =20
Request: USER NAME@DOMAIN
9 0.412798 213.133.XX.YY 192.168.0.157 POP =20
Response: +OK Password required.
10 0.418061 192.168.0.157 213.133.XX.YY POP =20
Request: PASS TOPSECRET
11 0.481128 213.133.XX.YY 192.168.0.157 POP =20
Response: +OK logged in.
12 0.496004 192.168.0.157 213.133.XX.YY POP =20
Request: STAT
13 0.535473 213.133.XX.YY 192.168.0.157 POP =20
Response: +OK 191 2169256
14 0.552737 192.168.0.157 213.133.XX.YY POP =20
Request: LIST
15 0.612986 213.133.XX.YY 192.168.0.157 POP =20
Response: +OK POP3 clients that break here, they violate STD53.
16 0.745730 192.168.0.157 213.133.XX.YY TCP =20
1197 > pop3 [ACK] Seq=3D64 Ack=3D1217 Win=3D63024 Len=3D0
17 0.789306 213.133.XX.YY 192.168.0.157 POP =20
Continuation
18 0.794426 192.168.0.157 213.133.XX.YY POP =20
Request: UIDL
19 0.849535 213.133.XX.YY 192.168.0.157 POP =20
Response: +OK
20 0.856275 213.133.XX.YY 192.168.0.157 POP =20
Continuation
21 0.856312 192.168.0.157 213.133.XX.YY TCP =20
1197 > pop3 [ACK] Seq=3D70 Ack=3D4562 Win=3D64240 Len=3D0
22 0.901273 213.133.XX.YY 192.168.0.157 POP =20
[TCP Previous segment lost] Continuation
23 0.901299 192.168.0.157 213.133.XX.YY TCP =20
[TCP Dup ACK 21#1] 1197 > pop3 [ACK] Seq=3D70 Ack=3D4562 Win=3D64240=20
Len=3D0 SLE=3D6022 SRE=3D6562
24 0.907846 213.133.XX.YY 192.168.0.157 POP =20
[TCP Retransmission] Continuation
25 0.907895 192.168.0.157 213.133.XX.YY TCP =20
1197 > pop3 [ACK] Seq=3D70 Ack=3D6562 Win=3D64240 Len=3D0
26 0.919591 192.168.0.157 213.133.XX.YY POP =20
Request: DELE 1
27 0.960260 213.133.XX.YY 192.168.0.157 POP =20
Response: +OK Deleted.
28 0.964463 192.168.0.157 213.133.XX.YY TCP =20
1197 > pop3 [ACK] Seq=3D78 Ack=3D6576 Win=3D64226 Len=3D0
29 0.966840 192.168.0.157 213.133.XX.YY POP =20
Request: DELE 2
30 1.020843 213.133.XX.YY 192.168.0.157 POP =20
Response: +OK Deleted.
31 1.029008 192.168.0.157 213.133.XX.YY POP =20
Request: DELE 3
32 1.070361 213.133.XX.YY 192.168.0.157 POP =20
Response: +OK Deleted.
33 1.076220 192.168.0.157 213.133.XX.YY POP =20
Request: DELE 4
34 1.115255 213.133.XX.YY 192.168.0.157 POP =20
Response: +OK Deleted.
35 1.122448 192.168.0.157 213.133.XX.YY POP =20
Request: DELE 5
36 1.161012 213.133.XX.YY 192.168.0.157 POP =20
Response: +OK Deleted.
37 1.169288 192.168.0.157 213.133.XX.YY POP =20
Request: DELE 6
38 1.208376 213.133.XX.YY 192.168.0.157 POP =20
Response: +OK Deleted.
39 1.214795 192.168.0.157 213.133.XX.YY POP =20
Request: DELE 7
40 1.253772 213.133.XX.YY 192.168.0.157 POP =20
Response: +OK Deleted.
41 1.263472 192.168.0.157 213.133.XX.YY POP =20
Request: DELE 8
42 1.302263 213.133.XX.YY 192.168.0.157 POP =20
Response: +OK Deleted.
43 1.309857 192.168.0.157 213.133.XX.YY POP =20
Request: DELE 9
44 1.348756 213.133.XX.YY 192.168.0.157 POP =20
Response: +OK Deleted.
45 1.361665 192.168.0.157 213.133.XX.YY POP =20
Request: DELE 10
46 1.401721 213.133.XX.YY 192.168.0.157 POP =20
Response: +OK Deleted.
47 1.405623 192.168.0.157 213.133.XX.YY POP =20
Request: RETR 11
48 1.451680 213.133.XX.YY 192.168.0.157 POP =20
Response: +OK 1153 octets follow.
49 1.620693 192.168.0.157 213.133.XX.YY TCP =20
1197 > pop3 [ACK] Seq=3D160 Ack=3D7726 Win=3D63076 Len=3D0
50 1.682797 213.133.XX.YY 192.168.0.157 POP =20
Continuation
51 1.712637 192.168.0.157 213.133.XX.YY TCP =20
1197 > pop3 [FIN, ACK] Seq=3D160 Ack=3D7883 Win=3D62919 Len=3D0
52 1.750463 213.133.XX.YY 192.168.0.157 TCP =20
pop3 > 1197 [FIN, ACK] Seq=3D7883 Ack=3D161 Win=3D5840 Len=3D0
53 1.750490 192.168.0.157 213.133.XX.YY TCP =20
1197 > pop3 [ACK] Seq=3D161 Ack=3D7884 Win=3D62919 Len=3D0

at this point, the connection is dead. Any ideas ?

All other users in the network works fine, so I am guessing that its=20
a client problem. On the other hand it happen with two different=20
email clients, so I am a bit puzzled. Any help is appreciated.

cu
stonki

=2D-=20
www.stonki.de: the more I see, the more I know.......
www.proftpd.de: Deutsche ProFTPD Dokumentation
www.krename.net: Der Batch Renamer f=FCr KDE
www.kbarcode.net: Die Barcode Solution f=FCr KDE


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