Running tmda-ofmipd with tcpserver and fixcrio

Hi there,

I'm configuring my LAN clients to inject outgoing emails into my central 
mail hub through tmda-ofmipd SMTP proxy at port 8025 (could be 
anything), so to let them benefit from the "tagged messages" machanism.

I'm using DJB's tcpserver and supervise well understood mechanisms 
(ucspi-tcp + daemontools packages).

My (simplified) supervise script for tmda-ofmipd is as follows :

    hostname=$(dnsdomainname)
    exec 2> /dev/null

    exec \
        envuidgid tofmipd \
        tcpserver -DUv -l "$hostname" \
            -Xx /etc/tcpcontrol/ofmip.cdb \
            0 8025 *fixcrio* /usr/local/tmda/bin/tmda-ofmipd -f -1 -P -A
    "/bin/checkpassword /bin/true"

I get the following error when trying a telnet client session at the 
command line :
 
/*error: uncaptured python exception, closing channel 
<__main__.SMTPChannel connected at -0x4857f9d4> (socket.error:(88, 
'Socket operation on non-socket') 
[/usr/lib/python2.4/asynchat.py|initiate_send|219] 
[/usr/lib/python2.4/asyncore.py|send|332])*/

This error disappears by itself if I omit the DJB's fixcrio program, 
which I'm using for qmail-smtpd.

Since tmda-ofmipd is acting as a protocol-level SMTP proxy server, in a 
way I thought identical to qmail-smtpd, I thought I could be using 
fixcrio here too. That is not the case, and one should be careful about 
this  deceptive issue, rather difficult to  pin point ;-)

I went thru tmda-ofmipd Python's code and the problem seems linked with  
the push method of the class SMTPChannel when used in the mode 
TMDAProxyProcessor(TMDAProxy, SMTPProcessor). I did not go any farther.

Does someone understand the deadly interaction between DJB's fixcrio 
program and tmda-ofmipd in true one_session mode ?

Thank you.


Dr. Franck PORCHER
 
PS. TMDA is truly awsome in its way, so elegant. An immense thank to its 
authors.


-- 
Franck Porcher, Docteur ès Sciences (Paris VI), Informatique théorique

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