[Mailman-Users] Mailman: Recipient address rejected: User unknown in local recipient table

[Futchko, Rose]

Good Morning,

I just finished migrating Mailman from one server to another, following
the instructions at URL
http://wiki.list.org/pages/viewpage.action?pageId=4030682

I am running Mailman version is 2.1.15

But now I am seeing the following error in my /var/log/maillog "NOQUEUE:
reject: RCPT from unknown[]: 550 5.1.1 <external IP Address>: Recipient
address rejected: User unknown in local recipient table; from=<d> to=<>
proto=ESMTP helo=<[]>"

Here is  my postconf -n output:

alias_database = hash:/etc/aliases, hash:/etc/mailman/aliases
alias_maps = hash:/etc/aliases, hash:/etc/mailman/aliases
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
debug_peer_level = 2
html_directory = no
inet_protocols = all
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
mydestination = $myhostname, list.$mydomain
mydomain = informs.org
myhostname = mail.informs.org
myorigin = $myhostname
newaliases_path = /usr/bin/newaliases.postfix
readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES
recipient_delimiter = +
sample_directory = /usr/share/doc/postfix-2.6.6/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
smtpd_recipient_restrictions = permit_mynetworks
reject_unauth_destination
unknown_local_recipient_reject_code = 550

Here is my mm_cfg.py config file:

DEFAULT_URL_HOST   = 'list.informs.org'
DEFAULT_EMAIL_HOST = 'list.informs.org'

add_virtualhost(DEFAULT_URL_HOST, DEFAULT_EMAIL_HOST)

MTA = 'Postfix'

*************

Can someone please counsel as to how to correct this error? 
Thank you,
Rose



Rose Futchko
Director of Information Technology
INFORMS
7240 Parkway Drive, Suite 300
Hanover, MD 21076
Rose.Futchko at INFORMS.org
443.757.3500