Error 2146233088 - Mails are sent but error appears

Question

Hello,

our software Diamant uses Limilabs Maill.dll as its integrated mail client. We're still using Exchange 2010.
Every time we try to send mails from the software with different settings (SMTP relay, SMTP Auth), mails are definetly sent, but in the software our users are receiving the error message above.

Any hints?

Thanks!

Comments

Where exactly do you see this error?
Is it an exception? What is the stack trace?

Can you turn logging on:
https://www.limilabs.com/blog/logging-in-mail-dll

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Thanks for the quick response. Our supporter of Diamant enabled some tracing, but I don't know where and how. I can just see that these logs have Limilabs :/

logs:
2022/02/01 13:03:39.459 P 001660 T 000001 "Error: ServerException - HResult: -2146233088"
2022/02/01 13:03:39.459 P 001660 T 000001 "Beende SMTP-Connect: Ende"
2022/02/01 13:03:39.459 P 001660 T 000001 "Abschluss Limilabs Log und SendMail Builder"
2022/02/01 13:03:39.459 P 001660 T 000001 "ReturnType: "
2022/02/01 13:03:39.459 P 001660 T 000001 "-2146233088"

Is there a more exact manual how to enable logging? Which file do I have to modify?

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Those are not Mail.dll logs.

You can find all information on how to enable logging here:
https://www.limilabs.com/blog/logging-in-mail-dll

Answer 1

It looks like 2146233088 error is returned by your server.

A bit of searching reveals that Exchange's 2146233088 error is "This mailbox exceeded the maximum number of large items".

I assume your mailbox might simply be full.