I have a listmember who has just started having problems posting to the list. They get the following message back: The original message was received at Thu, 16 Oct 1997 00:57:08 -0400 from port113.clea2.prodigy.net [204.237.92.113] ----- The following addresses had permanent fatal errors ----- <list address> ----- Transcript of session follows ----- ... while talking to list host: >>> MAIL From:<[log in to unmask]> SIZE=404 <<< 571 <[log in to unmask]>... This domain is banned. 554 <list address>... Service unavailable Could someone explain what '571....This domain is banned' means? How do I help them? Much appreciated, Tea