I posted a message using an account that has been active for several
years. It was rejected with the results shown below.
I cannot send ANYTHING to the mailing list, or the majordomo address;
ALL messages are rejected with equal certainty.
I see the error message. I do not understand why the HELO command was
rejected. Here is what I get with a telnet session:
$ telnet mail.cloud9.net 25
Connected to mail.cloud9.net.
Escape character is '^]'.
220 english-breakfast.cloud9.net ESMTP Postfix
No complaints here.
What is the problem?