I'm not really sure, but sometimes '500 Syntax error, command unrecognized' include errors such as command line too long. And for reasons I can not explain, I've noticed several AOL mail receit problems in the past 48 hours. I do not believe it is a problem with you or Hotmail; I think it is an AOL issue.
Does the person have another webmail account to try? Not much help, huh?
Does the person have another webmail account to try? Not much help, huh?