Unable to send emails: "Server configuration problem."
Late in the day, after being able to send emails all day, I started getting this error whenever I tried sending emails to any recipient:
Sending of the message failed. An error occurred while sending mail. The mail server responded: <[email recipient]>: Recipient address rejected: Server configuration problem. Please check the message recipient "[email recipient]" and try again.
I'm still able to receive emails as well as send emails from webmail. It's only when I try to send from my PC. Below are my SMTP settings for Dreamhost, my web host.
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The error message is saying that the dream host mail server is rejecting email because it has a problem with the recipient because of a server configuration problem.
If I had to guess you have exceeded the number of emails your plan with them allows in a 24 hour period. But really you should ask them
Thanks. I did reach out to them first, but because I was able to still send via webmail, they said it wasn't an issue on their end. He also checked the logs and said there wasn't anything on their side.
Might I suggest they did not check anything. If they did they would have told you you connected to their server and that the connection resulted in a failure because of XXXXX
Create a log as I describe here https://thunderbirdtweaks.blogspot.com/2021/10/logging-mail-sending-in-thunderbird.html