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Connection rejected due to service-level rules

Hi,

I am getting below mention errors in logs, I sent approx 16k emails, but almost 10953 emails are undelivered this time. in logs i found,

connection from [10.0.1.232:55129] rejected due to service-level rules

Current configuration of server is,

Please suggest the best values to deliever these emails without error.

Hello Khurram,

Because I do not have the information related on how you are sending these messages I could only advice you on how you could disable the rate limit present on SMTP Sending service:

  • On service page >> set all related Flow control parameters to 0
  • On used listener (you may use a different listener than the default one present on 0.0.0.0:25) >> set all related Flow control parameters to 0

HTH,
Ioan

We use IIS 6 mail feature.