The error -
There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.
<mail.something.com #5.5.0 smtp;550 <someone@somewhere.net> recipient rejected>
has always been one that I assumed meant an issue on the recipient's end. However, I did want to see if there's anything I could do from my side to see if it could possibly be a problem on my end.
There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.
<mail.something.com #5.5.0 smtp;550 <someone@somewhere.net> recipient rejected>
has always been one that I assumed meant an issue on the recipient's end. However, I did want to see if there's anything I could do from my side to see if it could possibly be a problem on my end.