Exchange Server 2010 SP1: Too many erorr, closing connection

Hi All,

I have exchange server 2010 SP1. I have two edge server. Users sent around 2000 email to inform other users both internal and external. We get the message error:

451 4.4.0 Primary target IP address responded with: "421 4.7.0 Too many error; closing connection". Attempted to alternate host, but that did not succeed....

Noted: I have track log with my Fortimail, it has around 1000 email was sent. Other email can sent/recieve normally.

Could you tell what is the problem.

BR,

Khemarin
 Queue Queue
KhemarinAsked:
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BusbarSolutions ArchitectCommented:
it looks like fortimail just blocked your edge servers from sending such amount of emails
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KhemarinAuthor Commented:
Thanks for your support.
Only this email on queue (Stuck), other email still can through in/out with this server.

Anyways, I will check on my fortimail.
BR,
Khemarin
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KhemarinAuthor Commented:
I ready checked with thefortimail. it is no block anything.

Do you have any idea?

BR,
Khemarin
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BusbarSolutions ArchitectCommented:
I think it is connection limit option somewhere
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KhemarinAuthor Commented:
Relation Hardware device:
The fortimail device, it spport up to 77,000 emails per hour.
The network card device:
 NIC
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KhemarinAuthor Commented:
Where can i check the connection limited setting both fortimail and exchange server or where?

BR,
Khemarin
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BusbarSolutions ArchitectCommented:
on the fortimail
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KhemarinAuthor Commented:
Hi busbar,

Your are right. Fortimail has limeted the SMTP connection.

 Limited 1000

Thanks so much for your kindly support.

BR,
Khemarin
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BusbarSolutions ArchitectCommented:
you are most welcome
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