Postfix and Queues

[Vladimir Dvorak]

Hi *,

I have little, but not annoying problem with Postfix and queuing 
management. When two or more big (understand >2 MB) emails are in active 
queue, Postfix is trying to deliver them simultaneously. But moth ago 
began to apear following message in /var/log/mail :

5BCED8EFE3* 4534286 Fri Mar 25 14:25:35  user at mydomain.cz
(lost connection with mailserver.domain.com [aa.bb.cc.dd] while sending 
message body)

^^ this message is in defer queue and wait for its time, when next try 
to deliver comes. During this time comes another big email from local 
user, which get stucked in defer queue too. The link start to have very 
high load of outgoing mail traffic, but all of them are unsuccesfully 
delivered.

Well, is there any chance to reduce queue to one mail in active queue ?

The system runs postfix-19991231pl08-29 - I know its very old.

Thank you in advance.

Vladimir