Dear Carol.. this is the message they put on the returned emails. It has an email address for abuse at the bottom. Could you contact them and ask to my email address ok'd:This message was created automatically by mail delivery software.A message that you sent could not be delivered to one or more of itsrecipients. This is a permanent error. The following address(es) failed: SMTP error from remote mail server after MAIL FROM: SIZE=5634: host frf-mailrelay2.att.net [18.104.22.168]: 521-22.214.171.124 blocked by ldap:ou=rblmx,dc=att,dc=net 521 Error - Blocked for abuse. Contact firstname.lastname@example.org.