553 sorry, that domain isn't in my list of allowed rcphosts

[Paul]

Hello, What does "553 sorry, that domain isn't in my list of allowed
rcpthosts (#5.7.1)" mean and how do I fix this error message?

Thank you - Paul

 

[neo [mvp outlook]]

Generally means that the ISP needs to be contacted because it isn't
accepting mail from the IP address assigned to your computer.

Hello, What does "553 sorry, that domain isn't in my list of allowed
rcpthosts (#5.7.1)" mean and how do I fix this error message?

Thank you - Paul

 

[Kathleen Orland]

What type of mail account do you have? Exchange, POP3, IMAP?

 

[N. Miller]

Hello, What does "553 sorry, that domain isn't in my list of allowed
rcpthosts (#5.7.1)" mean and how do I fix this error message?

It is a typical error for unauthorized relay. Sometimes fixed by checking,
"My server requires authentication"; but, generally, dependent upon your
email service provider, and how you connect.

 

[VanguardLH]

Hello, What does "553 sorry, that domain isn't in my list of allowed
rcpthosts (#5.7.1)" mean and how do I fix this error message?

Thank you - Paul

Go into the account settings defined within Outlook and authenticate to
the SMTP mail host.