Email issues, getting a AS(4810) 550 5.7.520 error when emailing myself

Phil Diehl 1 Reputation point
2021-08-16T16:20:50.657+00:00

Hi everyone.

It seems I can send invoices to everyone else, but when I use my software "My invoices & Estimates deluxe 10.0" , it opens up EMclient and then populates an email
with a simple PDF and a invoice number.

When I hit send and email myself, I get this error:
Remote Server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)'

I've researched this before, and it seems Microsoft tier2 had to whitelist something to get it working. Can someone please investigate
this and advise me how MS can fix this issue.

The emails seem to go through fine to my Computer techs which have Barracuda spam filter. Barracuda is not showing anything spammy in the message.

Thanks,
Phil

Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
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  1. George Papadopoulos 6 Reputation points
    2022-03-21T13:55:54.983+00:00

    That AS gateway is controlled by a criminal! There is your answer.