Message Submission Rate
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Our contractor uses our smtp server (exchange) to send emails through some of their application. Before several days they wrote that there is a error in their application log: "4.4.2 Message submission rate for this client has exceeded the configured limit" and the application do not send the mail to all the mailboxes that are in their application list (what's a big problem). According to the internet reference, I found it necessary to increase MessageRateLimit on the connectors. The flood limit was 100, the increase did not help (150-200-unlimited). The vendor still has the same error message. How can I solve this problem?
I looked at event logs on our exchange server, and I found the following error.
Event 1035
Inbound authentication failed with error logondenied for receiving connector client frontend EXCHANGESERVERNAME. The authentication mechanism is Gssapi. The source IP address of the client who attempted to autheticate to Microsoft Exchange is [IP address where the application is running)].
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Did you configure the MessageRateLimit on the receive connector which used to reply email for your contractor 's application or just do this with all receive connectors?
Agree with Ed Crowley said, you can try to authenticate your device or application directly with an mailbox, and send mail using SMTP client submission
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Yes, the contractor has account and uses port 587. All the time. Password is valid. MessageRateLimit has been enhanced on all of the receive connectors. No settings have changed, and it has stopped going. Some mails pass, but not everything (what's the problem).
Please run the Get-receiveconnector | ft Name, messageratelimit cmdlet to double confirm the messageratelimit of all the receive connections had been configured as unlimited. If all the settings are correctly, try to restart the Transport service and test again.
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here its screen. I trying for all items set vaule unlimited, but with no effect. This s actual settings.
Please allow me some time to further confirm the issue and see how we can best help you. I will get back to you as soon as I get it confirmed.
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OK, I will be waiting. Thank you for your interest.
From your screenshot, it seems that not all of the receive connectors had set the messageratelimit as unlimited, could you tell us which receive connector your application used to send email?
How many emails this application can send successfully now?
The MaxInboundConnectionPerSource parameter specifies the maximum number of connections that this Receive connector serves at the same time from a single IP address. A valid value is from 1 to 10000, or the value unlimited. The default value is 20. you can try to increase the value for this parameter then test again:
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This error message indicates that the MessageRateLimit parameter in your Exchange receive connector is set to a very low limit.
Ýou can change this limit using these Exchange Management SHELL commands:
First get a list of receive connectors and their MessageRateLimits:
get-receiveconnector | ft name,messageratelimit
On our own server the output looks like this:
Identity : WIN-DKVEC8768RS\Default WIN-DKVEC8768RS
MessageRateLimit : 100
Identity : WIN-DKVEC8768RS\Client WIN-DKVEC8768RS
MessageRateLimit : 100
Identity : WIN-DKVEC8768RS\local apps relay
MessageRateLimit : unlimited
Now select the receive connector that is active on your own server. Most of the time it will be the "Default YOURSERVERNAME" connector. To change the maximum accepted header size use this command:
set-receiveconnector -identity Default* -MessageRateLimit 200
If you are unsure about the active receive connector just do this with all receive connectors, one after the other
You'll see the value changed when you do another get-receiveconnector like above again.
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