User MessageRateLimit setting

Question

I have some smtp server need to send email from exchange server and it configure the 587 smtp ，Originally ，the client proxy SRV MessageRateLimit is 5, Now ,I set it to 20, after 2 days,when smtp server send email ,it still limited 5 email per minute, I donnot know what is need to setting alse

Answer 1

Hi @姚黎忠

Are there any error messages when you send the 20 emails per minutes? 

Based on my knowledge, The parameter MessageRateLimit sets the maximum messages per minute for POP3 or IMAP4 clients using SMTP. Clients exceeding this value get a transient error. If you did not receive this related message, it means you are not reach the maximum messages.

In this way,  we firstly recommend you confirm settings with the following command to ensure all receive connectors are configured correctly.

Get-receiveconnector | ft Name, messageratelimit

Then, you could use this Exchange Management Shell cmdlet to see how many emails have been sent from this client and determine whether there are more than 5 or 20 emails in one minute.

Get-MessageTrackingLog -Sender ******@domain.com -Recipients ******@domain.com | Where-Object { $_.ConnectorId -eq "ServerName\ConnectorName" } | ft timestamp,eventid,source,sender,recipients,messagesubject,clientip

For example:

Get-MessageTrackingLog -Sender ******@xxx.com -Recipients ******@xxx.com | Where-Object { $_.ConnectorId -eq "EX1\Default ex1" } | ft timestamp,eventid,source,sender,recipients,messagesubject,clientip

Besides, please make sure it is not the only connector which is being used during the process of email delivery. If you have another receive connector used in the process, the MessageRateLimit must be also increased to 20.

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