Slowly sending anonymous emails.

Question

Slowly sending anonymous emails.

Андрей Михалевский 3,451

Hello. I have an application that sends emails via POP3. About 500 emails leave the server in 10 seconds.

I converted it to anonymous sending. Now I have one email going out in a minute.

What can the delay be caused by and how to fix it ?

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Answer 1

KyleXu-MSFT 26,396

@Андрей Михалевский

I converted it to anonymous sending.

You could use Telnet command to send emails? You can also check the mail flow for it with Message Tracking Log:

Get-TransportService | Get-MessageTrackingLog -Recipients ******@domain.com -MessageSubject "subject" -Start 10/17/2022 -End 10/19/2022

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Андрей Михалевский 3,451 Reputation points

2022-10-18T06:23:42.443+00:00

You could use Telnet command to send emails?

As I said, sending works on an anonymous connector. https://learn.microsoft.com/en-us/exchange/mail-flow/connectors/allow-anonymous-relay?view=exchserver-2019

Messages take a long time to process in the queue. There are no errors, no status, just one message is sent about once a minute.
KyleXu-MSFT 26,396 Reputation points

2022-10-20T07:53:25.377+00:00

I would suggest you try to use Telnet to send email on your Exchange server (This is a quick way to narrow down for anonymous connector). It could help us to narrow down this issue related to connector or mail client.
Андрей Михалевский 3,451 Reputation points

2022-10-20T08:27:26.137+00:00

The emails are sent via telnet. My emails are sent through the app once a minute. Sending 500 emails at once.

I can't figure out why they are taking so long in the queue.

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Slowly sending anonymous emails.

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