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Small and medium business | Business Central, N...
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Invoice dispatch from BC is not working because of Auth. Error on Mailserver

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Posted on by 32

Hi everyone,

If we dispatch Invoices directly out of Business Central, we get an error that the mailserver is not supporting authentication.
We have four companys and only one have a problem with that server.


we use ionos as mail service.


We have a "specific User", SMTP server is the smtp.ionos.de Server. Port 465


I try Basic, OAuth2.0 - error changed to no Plugin support that and Anonymous. And i try every of that combinations with secure connection and without.
I´m not sure what the error is. Maybe it´s after an update because we never change the seetings.


Hope one of you guys had an idea or maybe a solution for that.

Thanks everyone!

I have the same question (0)
  • David D. Profile Picture
    32 on at

    It works again. Not sure what was wrong. But it works now...

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