Cindy: I suggest bucking it to [log in to unmask] for further explanation. But in the mean time, DON'T PANIC!!!! ;-) sometimes these things are very temporary conditions especially if the original error occurred on weekends, after working hours, or mid-nite (recipient's time zone). (This error does NOT contain any timestamp, so you could wait a couple of days and see if it is still occurring.) What has this address done? Copy of error message follows: <<<<<<<<<<<<<< Err First Last Address --- ----- ----- ------- 1 10/22 10/22 Jacque Jones <[log in to unmask]> Last error: Mailer sparticus.EUREKANET.COM said: "551 <[log in to unmask]>... we do not relay"