Re: persistent connection problem

[Mike Almogy <mike@lizard.co.il>]

Thank you very much.
I will try it in our lab tomorrow and will write you if there any 
developments.
If i'de like to add the code that closes the SMTP stream, what do i need 
to do or get? i'm not a programmer (just a sys admin)

Thanks,
Mike

Matti Aarnio wrote:

>On Sun, Aug 22, 2004 at 09:39:01PM +0000, Mike Almogy wrote:
>  
>
>>Hello all
>>
>>I'm new to Zmailer and have some questions.
>>Here is my situation:  I have a customer who has zmailer as mail relay 
>>with some anti virus/anti spam software that works only on zmailer.
>>The mail relay sends it's received mails to a F5 load balance system 
>>that supposed to distribute the load among 4 other mail server.
>>The problem, as they told me, was that the F5 keeps TCP connections, and 
>>since the zmailer keeps it's tcp connection and keeps persistent 
>>connection to the mail server,then only one of the mail servers is 
>>actually working.
>>
>>Is there a way to disable this ?
>>    
>>
>
>Or side-step it.
>
>There is a way to run parallel streams.
>
>Current setup has a capability to route thru a parallel
>delivery setup.
>
>E.g. into   routes   file add:
>
>  target.dom  smtp-par![1.2.3.4]
>
>and delivery will run in parallel streams.
>The  smtp-par  is defined in the  scheduler.conf  file, and in
>there you can add more parallel streams, if need be:
>
>#
># In some cases we definitely want to run parallel smtp sessions
># to given destination:
>#
>smtp-par/*
>        maxchannel=999
>        maxring=50
>        maxthr=10
>        overfeed=2
>        interval=1m
>        retries="1 1"
>        skew=1
>        command="smtp -c smtp-par -s" #- l ${LOGDIR}/smtp-par"
>
>
>The "maxthr=10" in there sets the system to run up to 10 streams
>in parallel.  Now if there are   maxthr * overfeed  number of
>messages to be sent, then all allocated streams will be feeding
>simultaneously.
>
>If that isn't enough, make a new -- "smtp-par-20/*" clause, or
>some such, and set in there "maxthr=20"  (or however much you
>feel necessary).
>
>There is no way to limit the number of messages per connection.
> ...
>Hmm...  There is a possibility to add code to send only one message
>per connection ( = close SMTP stream after each message )
>That might help a bit, too.
>
>
>  
>
>>Thanks,
>>
>>Mike
>>    
>>

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