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repa2 13th January 2010 00:51

X-Postfix; mail for [xxx.xx.xx.x] loops back to myself> #SMTP#

i installed an Debian 5.0 machine according this guide:

everythings works good, but postfix is not forwarding my mails to my exchange system.

just get the following message back:

#< #5.4.6 X-Postfix; mail for [xxx] loops back to myself> #SMTP#


# See /usr/share/postfix/ for a commented, more complete version

# Debian specific: Specifying a file name will cause the first
# line of that file to be used as the name. The Debian default
# is /etc/mailname.
#myorigin = /etc/mailname

smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
biff = no

# appending .domain is the MUA's job.
append_dot_mydomain = no

# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h

readme_directory = no

# TLS parameters
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache

# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
# information on enabling SSL in the smtp client.


myhostname = changed
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = changed
mydestination =
relayhost =
mynetworks =,
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
message_size_limit = 104857600
local_transport = error:No local mail delivery
local_recipient_maps =
virtual_alias_maps = hash:/etc/postfix/virtual
relay_recipient_maps = hash:/etc/postfix/relay_recipients
transport_maps = hash:/etc/postfix/transport
relay_domains = hash:/etc/postfix/relay_domains
smtpd_helo_required = yes
smtpd_sender_restrictions = check_sender_access hash:/etc/postfix/sender_access, reject_non_fqdn_sender, reject_unknown_sender_domain
smtpd_recipient_restrictions = reject_non_fqdn_sender, reject_unknown_sender_domain, reject_non_fqdn_recipient, reject_unknown_recipient_domain, permit_mynetworks, reject_unauth_destination, reject_unauth_pipelining, reject_invalid_helo_hostname, reject_non_fqdn_helo_hostname, reject_rbl_client
smtpd_data_restrictions = reject_unauth_pipelining
header_checks = regexp:/etc/postfix/header_checks
any ideas?

repa2 13th January 2010 01:02

found it out.

i'm replacing another gateway, that has the same hostname set in as the new one.

greeted me with my own hostname

changed hostname, now it works :)

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