E-Mail problems

  Conny 22:49 20 Sep 2003
Locked

I use Hotmail for my emails and often send/forward items to friends on AOL. Everything was fine till recently when I started getting 'Non Delivery' messages. They are as follows;
'Unable to deliver message.... Diagnostic Code;smtp;500
SYNTAX ERROR, COMMAND UNRECOGNISED LINE BY ITSELF.

I am running XP Pro and have made no changes to my system. Can anyone shed any light on this please?

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