when i try to send mail i get an error blacklisted regular expression (pharmacy ),port 25,secure ( ssl ) : server error 550 0x800ccc69.O.K i am able to send mail but unable to send only to one address with the error above.Please assist
that error code means "UNKNOWN SENDER" or the mailbox you are trying to send to doesn't exist. Since that is the only address you can't send to, it seems that the address doesn't exist...at least not anymore.
