Possible WP MAIL SMTP Conflict

Hi there,

I just set up SLN for the first time. When setting up SLN with an extra Email-Address “[email protected]” (this not being the main WP admin email) in the “Extra Emails” input field (“Send notifications to additional email addresses, separate multiple w/ commas”) – assuming this field is for extra notification receiver addresses – I get this notification from WP MAIL SMTP (https://projectdmc.org/plugins/wp-mail-smtp/), which is one of my most important plugins for trouble free mail transfer:

Notice! The last email your website attempted to send failed.

Email Source Simple Login Notification
Mailer: Custom SMTP server
The following From address failed: [email protected] : MAIL FROM command failed, Requested action not taken: mailbox unavailable
Sender address is not allowed.
,550,SMTP server error: MAIL FROM command failed Detail: Requested action not taken: mailbox unavailable
Sender address is not allowed.
SMTP code: 550SMTP server error: MAIL FROM command failed Detail: Requested action not taken: mailbox unavailable
Sender address is not allowed.
SMTP code: 550

For more details please try running an Email Test or reading the latest error event.

[emphasis mine]

Note: [email protected] is my private Email-Address, not the WP Admin Email-Address that sends out WP mails (in my case via WP MAIL SMTP plugin).

2 more questions:

  1. Would it be possible to ecxlude (login-) users by username from SLN notifications? I don’t need an alert everytime I personally log in.
  2. Any chance making the body of the SLN notification email editable, i.e. add some <br> tags to the body so the content is a little more clear cut on a quick glance?

Thanks a lot!

 

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