Hi Corey Head Try this. Hope this might helpful to you. <************************************> telnet localhost 25 Connected to localhost. Escape character is '^]'. 220 something.fake ESMTP Sendmail 8.12.9/8.12.9/ EHLO localhost 250-something.fake Hello localhost [127.0.0.1], pleased to meet you 250-ENHANCEDSTATUSCODES 250-PIPELINING 250-8BITMIME 250-SIZE 250-DSN 250-ETRN 250-AUTH LOGIN PLAIN 250-DELIVERBY 250 HELP AUTH LOGIN 334 VXNlcm5hbWU6 a4msl9ux 334 UGFzc3dvcmQ6 ZvVx9G1hcg== 235 2.0.0 OK Authenticated MAIL FROM: me@xxxxxxxxxxxxxx 250 2.1.0 me@xxxxxxxxxxxxxxxxx Sender ok RCPT TO: you@xxxxxxxxxxxx 250 2.1.5 you@xxxxxxxxxxxxxxx Recipient ok DATA 354 Enter mail, end with "." on a line by itself This is a test -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list