Hi all ...

Happy to be back for a question/suggestion again ....

I came accross this weird situation.


I take care of a site running shorewall 3.0.5  in the firewall and qmail 
in the DMZ ( mail server ).


A remote clients  smtp server denies to accept more than one incomming 
smtp connections from my site  :-(.
In my site users are always sending mail to this server ( 50 - 60 per day ).

So when an smtp transfer is on ... the next ones gets stuck in the queue 
and the message I get in the log is
"Remote_host_said:_421_#4.4.5_Too_many_connections_from_your_host"  
 and finally gets bounced ( 3 hour queue - life  limit ) depending on 
the traffic of  that particular date.

I 've searched all qmail documentation but I was not able to find a way 
to limit the number of connections to remote smtp server.


Is there a safe way to do this in shorewall ( One active smtp connection 
to a specific remote site only ) ??? With out mails getting bounced back 
to my users ???

Any help will be much appreciated as always ...


Kind Regards

Harry ....







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