Receive a message "An error occurred while sending email. The mail server responded: undeliverable address: user unknown..." From web mail I can send emails.
Received this alert message (attached). An error occurred while sending email. The mail server responded: 5.1.1. Recipient address rejected: undeliverable address: User unknown. Please check the message recipient...... and try again. I could send my message through web mail but not through Thunderbird. Any suggestions? Thank you in advance. Mike.
Received this alert message (attached). An error occurred while sending email. The mail server responded: 5.1.1. Recipient address rejected: undeliverable address: User unknown. Please check the message recipient...... and try again.
I could send my message through web mail but not through Thunderbird. Any suggestions? Thank you in advance.
Mike.