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Thanks for your suggestion.
Since I am new in this can you suggest some java based deployments that I can use. I too looked for what you have suggested but maybe I didn't looked hard enough.
Thanks in advance
From: email@example.com [mailto:firstname.lastname@example.org] On Behalf Of Wietse Venema
Sent: Friday, April 09, 2010 6:18 PM
To: Postfix users
Subject: Re: amavis Delivery status notification(DSN) failing
> Executed the command you sent, getting the following error message:
> fatal: lost connection while sending message
Then, your custom SMTP code needs to be replaced. To speed up
development, may I suggest that you consider using already-deployed
SMTP code instead of re-inventing your own.
> thanks in advance
> Ashish Sharma
> -----Original Message-----
> From: email@example.com [mailto:firstname.lastname@example.org] On Behalf Of Wietse Venema
> Sent: Friday, April 09, 2010 4:23 PM
> To: Postfix users
> Subject: Re: amavis Delivery status notification(DSN) failing
> Sharma, Ashish:
> > Wietse,
> > Following is the requested result:
> > $telnet 10.194.99.63 10030
> > Trying 10.194.99.63...
> > Connected to ip-10-194-99-63.ec2.internal (10.194.99.63).
> > Escape character is '^]'.
> > 220 Hello
> > Mail From:email@example.com
> > 503 5.5.1 Error: need EHLO command
> > EHLO
> > 250 Custom Java SMTP Server
> > MAIL FROM:firstname.lastname@example.org
> > 250 Ok
> > RCPT TO:email@example.com
> > 250 OK
> > DATA:
> > 354 send data now
> > Ashish sharma is testing this
> > .
> > 250 message received
> > Connection closed by foreign host.
> Now you should connect to the same program with 10 connections at
> the same time, using the Postfix smtp-source tool.
> ./smtp-source -c -l 10000 -m 1000 -s 10 -f firstname.lastname@example.org -t email@example.com 10.194.99.63:100
> The Postfix smtp-source tool is distributed with Postfix source
> code, and is sometimes installed by Linux distributions.