I am struggling to send and receive email to/from ONE email address
I have one email address that is very important to be communicating with for business purposes. For some reason, anytime they try to send me an email I do not receive it, and anytime I send them an email I get the following message. Can anyone help me???
This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:
info@4naturesfinest.com host mail.newmillennium.net [3.134.195.172] SMTP error from remote mail server after MAIL FROM:<info@discountvitaminshop.com> SIZE=40326: 551 This mail server requires authentication before sending mail from a locally hosted domain. Please reconfigure your mail client to authenticate before sending mail.
Reporting-MTA: dns; vps73471.inmotionhosting.com
Action: failed Final-Recipient: rfc822;info@4naturesfinest.com Status: 5.0.0 Remote-MTA: dns; mail.newmillennium.net Diagnostic-Code: smtp; 551 This mail server requires authentication before sending mail from a locally hosted domain. Please reconfigure your mail client to authenticate before sending mail.
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What are your smtp settings for mail.newmillennium.net? The error is saying that there is no authentication set, i.e. it's something like authentication method = none on port 25, instead of authentication method = normal password on port 465 or 587.