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SMTP Cannot send message using the server xyzzy

3667878 shared this question 3 months ago
Need Answer

Every now and then, I get this, and it goes away after a day or two, sometimes longer. But generally only arrives every 4-9 months, then it's gone again.

DNS resolution is working to smtp.mailbox.org (80.241.60.196) though pings time out.

My gut tells me the mailbox.org smtp server is wonky as everything else works, I even receive email from that mailbox. Client is setup using their Mac profiles so it's not that.

Anyone else get this?

Comments (1)

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Maybe temporary blocking mechanism, because their systems thinks, you’re an spammer?


Open a ticket. The support will help I think.