-----Original Message----- From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On Behalf Of Michael Kress Sent: Monday, December 11, 2006 5:49 PM To: CentOS mailing list Subject: [CentOS] dovecot disconnect(s) / new facts

Hi,

I just tried the below with the current version 1.0 RC15 (from the dovecot website) and I still got the Problem: telnet gives me the following output: -----8<-----8<-----8<-----SNIP-----8<-----8<-----8<----- +OK dovecot ready.u-ERR invalid command u s-ERR invalid command s e-ERR invalid command e r-ERR invalid command r -ERR invalid command u-ERR invalid command u s-ERR invalid command s e-ERR invalid command e r-ERR invalid command r _-ERR invalid command _ 1-ERR invalid command 1

-ERR invalid command -----8<-----8<-----8<-----SNIP-----8<-----8<-----8<-----

The above output results from the following entry: user user_1[ENTER]

So now I know that this is no version issue. Can you tell me something on how I can find the solution for this problem? I don't think its a firewall issue, I disabled my Desktop Firewall. On the server I use shorewall, but of course, port 110 is open and it works disabling AntiVir on the client side. The error also occurs when I disable the Server Firewall as well. The error is reproducible on several PCs (I tried 3 PCs). Have you got any hint? Without solving the problem, I have to switch the pop3 server to another one, because this problem is really a crucial one.The only problem is: I like dovecot. :) Moreover I'd like to keep dovecot updatable.

Thanks in advance! Regards, Michael

-------- Original-Nachricht -------- Betreff: [CentOS] dovecot disconnect(s) Datum: Wed, 06 Dec 2006 00:29:21 +0100 Von: Michael Kress kress@hal.saar.de Antwort an: CentOS mailing list centos@centos.org An: CentOS mailing list centos@centos.org

Hi, I've got a problem with dovecot regarding a pop3 proxy issue. When I configure a dovecot server to do just plain pop3 I can telnet from a windows box without any flaw, but as soon as the client uses some pop3 proxy (for example outlook uses avira antivir Mail-AntiVirus Protection), queries to that server fail. A log line looks like this:

pop3-login: Dec 05 22:53:24 Info: Disconnected [::ffff:84.165.54.42]

Moreover with the proxy activated, a telnet to port 110 (pop3) is not working properly, the cursor stays right behind "+OK dovecot ready." and as soon as I enter a character, the server rejects this character as an unknown command. As soon as I turn off the Antivir-Proxy the telnet to port 110 runs flawlessly and I can login. Is there any fix for that? Or did I misunderstand something? TIA for any hint

Regards, Michael

Is there any update for Antivir on the Windows side? It looks like it is mangling your pop3 commands.

alex