Viewing articles tagged '550'

 550 Authentication is required for relay

550 Authentication is required for relay error when sending email from your email accountA 550...

 550 From domain must match authenticated domain

550 From domain must match authenticated domainA 550 From domain must match authenticated domain...

 550 Sender is not allowed

550 Sender is not allowedA 550 Sender is not allowed error occurs when a sender or domain name...