Subject: RE: XXXXXX – October 27, 2020
Sent: 10/31/2020 12:40 PM
The following recipient(s) could not be reached:
‘Your Name’ on 10/31/2020 12:40 PM
503 valid RCPT command must precede DATA

This means you must check your email before trying to send mail meaning that our mail server requires authentication.

Configure your email client to authenticate automatically by checking the “my server requires authentication” box in your email configuration. You will be able to send mail without having to “pop” your mail box first.

If using MS Outlook, please try the following:

1) Open outlook
2) Go to Tools/Email Accounts
3) Select the Account with the trouble and click Change
4) Click on More Settings
5) Click on Outgoing Server Tab
6) Click “Outgoing Mail Server (SMTP) requires authentication” and make sure “Use same settings as incoming mail server” is selected (see attached image)
7) Click on “Advanced Tab”
8) Set outgoing Port (SMTP) to 26 (if your hosting account is Linux) or 587 if your hosting account is Windows.
9) Click Ok and then Test Account Settings

If it fails on send then repeat starting from 7.

7) Click on Advanced Tab
8) Set outgoing Port (SMTP) to 465
9) Check the box Beside “The server requires an encrypted connection (SSL)”.
10 ) Click ok and then Test Account Settings