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List:       qmail-ldap
Subject:    Re: Problem with auth pop and connection forwarding, had to patch	auth_pop.c
From:       Claudio Jeker <cjeker () diehard ! n-r-g ! com>
Date:       2002-09-26 7:25:46
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On Wed, Sep 25, 2002 at 11:44:17PM +0200, Enrico Cavalli wrote:
> Hi, this is the first time I write to the list. I'm new to qmail, but I
> really want to use it to deploy a cluster for a large number of
> mailboxes.
> 
> I use RedHat Linux 7.3, qmail-1.03, qmail-ldap-1.03-20020901.patch, the
> latest daemontools, ucspi-tcp, qmail-conf...
> 
> smtp, qmqpd, everything works fine (I read life with qmail and life with
> qmail-ldap, everything is very clear).
> 
> even pop3 works if I connect to a machine which is the mailHost for a
> given user. 
> 
> The problem is when I connect to mail2 and for example my mailHost is
> mail1: the connection gets forwarded, and mail2 sends the "user ..."
> part of the pop3 dialog to mail1. I checked this with tcpdump and later
> on with DEBUG on the mail2 side.
> 
> I worked 2 days on this problem and it was getting me crazy when ....
> this evening I decided to look at auth_pop.c, in particular I modified
> auth_forward() and set to
> 
>  substdio_put(&ss, "\r\n", 2);
> 
> the two lines which were 
> 
>  substdio_put(&ss, "\r\n", 1);
>  
> Now everything works perfectly. Please keep in mind that
> 
> 1. I don't undestand  C very well
> 2. I knew the problem is when the forwarder waits for the OK after
> sending user login
> 3. I suppose that the third parameter in substdio_put counts the number
> of character you have to put in some file descriptor
> 
> If someone can tell me something about that I'll be extremly grateful.
> 

Your fix is absolutly correct. I changed from LFCR to CRLF, the problem
is that since then only a "\r" is transmitted whereas earlyier only a
"\n".
qmail-pupup searches for "\n" and therefor since the last patch it does no
longer work correctly.

I fixed it now.

Thanks
-- 
:wq Claudio
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