No User Corresponding to e-mail

[Caterpillar]

Hi All...

I am using zimbra 5.0.8. on debian etch. We are facing a problem with in our client place. If i send a mail to a user, i am getting the undelivered message error, It was working fine earlier. with same setup.

This is the mail system at host mail.xxxxxx.com.

I'm sorry to have to inform you that your message could not be delivered to
one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can delete your own
text from the attached returned message.

The mail system

<MAILER-DAEMON@mail.xxxxxxxxx.com>: mail for mail.xxxxxx.com loops back
to myself.


This is error message is coming to some of the users. i tried to find the problem form log but i could not. Can anyone please help me...

Waiting for replay....

Thanks In Advance.
Caterpillar..

[uxbod]

cat /etc/hosts
cat /etc/resolv.conf
dig domain.com mx
dig domain.com any
host `hostname` <- note backticks and not single quotes

are there any forwarders on the peoples accounts at all ?

[veronica]

> <MAILER-DAEMON@mail.xxxxxxxxx.com>: mail for mail.xxxxxx.com loops back
to myself.

Could you paste zimbra.log entries for the errors. This error comes generally when you mydestination is not proper.

Please also paste output of postconf -n

[Caterpillar]

sender_canonical_maps = ldap:/opt/zimbra/conf/ldap-scm.cf
virtual_alias_domains = ldap:/opt/zimbra/conf/ldap-vad.cf
lmtp_connection_cache_time_limit = 4s
recipient_delimiter =
smtpd_tls_cert_file = /opt/zimbra/conf/smtpd.crt
smtpd_tls_auth_only = no
myhostname = mail.xxxx.com
virtual_mailbox_domains = ldap:/opt/zimbra/conf/ldap-vmd.cf
mydestination = localhost
mailbox_size_limit = 0
setgid_group = postdrop
smtpd_client_restrictions = reject_unauth_pipelining
queue_run_delay = 300s
minimal_backoff_time = 300s
virtual_alias_maps = ldap:/opt/zimbra/conf/ldap-vam.cf
transport_maps = ldap:/opt/zimbra/conf/ldap-transport.cf
message_size_limit = 20480000
sendmail_path = /opt/zimbra/postfix/sbin/sendmail
broken_sasl_auth_clients = yes
lmtp_connection_cache_destinations =
alias_maps = hash:/etc/aliases
manpage_directory = /opt/zimbra/postfix/man
smtpd_helo_required = yes
in_flow_delay = 1s
daemon_directory = /opt/zimbra/postfix/libexec
maximal_backoff_time = 4000s
virtual_transport = error
mynetworks = 127.0.0.0/8 192.168.0.0/24 (public address)
smtpd_recipient_restrictions = check_recipient_access hash:/opt/zimbra/postfix/conf/protected_recipients, reject_non_fqdn_recipient, permit_s
asl_authenticated, permit_mynetworks, reject_unauth_destination, reject_unlisted_recipient, reject_invalid_hostname, reject_non_fqdn_sender,
permit
lmtp_host_lookup = dns
smtpd_tls_loglevel = 1
relayhost =
disable_dns_lookups = no
mail_owner = postfix
virtual_mailbox_maps = ldap:/opt/zimbra/conf/ldap-vmm.cf
content_filter = smtp-amavis:[127.0.0.1]:10024
version = 2.4.7.5z
mailq_path = /opt/zimbra/postfix/sbin/mailq
header_checks = pcre:/opt/zimbra/conf/postfix_header_checks
smtpd_use_tls = yes
queue_directory = /opt/zimbra/data/postfix/spool
newaliases_path = /opt/zimbra/postfix/sbin/newaliases
smtpd_reject_unlisted_recipient = no
smtpd_data_restrictions = reject_unauth_pipelining
local_header_rewrite_clients = permit_mynetworks,permit_sasl_authenticated
smtpd_tls_key_file = /opt/zimbra/conf/smtpd.key
command_directory = /opt/zimbra/postfix/sbin
smtpd_sasl_auth_enable = yes

permitted_senders_list = check_sender_access hash:/opt/zimbra/postfix/conf/permitted_senders, reject
smtpd_restriction_classes = permitted_senders_list
#smtpd_recipient_restrictions = check_sender_access hash:/etc/postfix/restricted_senders
#local_only = check_recipient_access hash:/etc/postfix/local_domains, reject

[veronica]

So your domain is mail.xxxxxx.com ? And zimbra.log entries also

zimbra mta accepts mail for domains listed in mydestination, virtual_mailbox_domains, virtual_alias_domains.