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

Futchko, Rose Rose.Futchko at INFORMS.ORG
Wed Aug 22 16:24:50 CEST 2012

Good Morning,

I just finished migrating Mailman from one server to another, following
the instructions at URL

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
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'


MTA = 'Postfix'


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

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

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