I have just installed a new iredmail server and so far so good, just one issue.

When my server recieves mail from some servers eg yahoo.com the error in the logs has @hostname.org [@mail.hostname.org] instead of @mydomain.org [@mydomain.org] like all the successfully delivered mail. I think this what is causing the "Recipient address rejected: User unknown in local recipient table" error. This is just happening with mail from some domains not all.

Here is part of the log;

Feb 22 12:35:06 mail postfix/smtpd[3689]: connect from web34205.mail.mud.yahoo.com[66.163.178.120]
Feb 22 12:35:06 mail postfix/smtpd[3689]: NOQUEUE: reject: RCPT from web34205.mail.mud.yahoo.com[66.163.178.120]: 550 5.1.1 <user@mail.mydomain.org>: Recipient address rejected: User unknown in local recipient table; from=<sender@yahoo.com> to=<user@mail.mydomain.org> proto=SMTP helo=<web34205.mail.mud.yahoo.com>

and here is my

mail:/etc# postconf -n
alias_database = hash:/etc/postfix/aliases
alias_maps = hash:/etc/postfix/aliases
allow_min_user = no
append_dot_mydomain = no
biff = no
bounce_queue_lifetime = 1d
broken_sasl_auth_clients = yes
config_directory = /etc/postfix
content_filter = smtp-amavis:[127.0.0.1]:10024
delay_warning_time = 0h
disable_vrfy_command = yes
enable_original_recipient = no
header_checks = pcre:/etc/postfix/header_checks.pcre
home_mailbox = Maildir/
inet_interfaces = all
mail_name = iRedMail
mail_version = 0.5.1
mailbox_command = /usr/lib/dovecot/deliver
mailbox_size_limit = 15728640
maximal_backoff_time = 4000s
maximal_queue_lifetime = 1d
message_size_limit = 15728640
minimal_backoff_time = 300s
mydestination = $myhostname, localhost, localhost.localdomain, localhost.$myhostname
mydomain = mydomain.org
myhostname = mail.mydomain.org
mynetworks = 127.0.0.0/8
mynetworks_style = subnet
myorigin = zuc.adventist.org
proxy_read_maps = $canonical_maps $lmtp_generic_maps $local_recipient_maps $mydestination $mynetworks $recipient_bcc_maps $recipient_canonical_maps $relay_domains $relay_recipient_maps $relocated_maps $sender_bcc_maps $sender_canonical_maps $smtp_generic_maps $smtpd_sender_login_maps $transport_maps $virtual_alias_domains $virtual_alias_maps $virtual_mailbox_domains $virtual_mailbox_maps
queue_run_delay = 300s
readme_directory = no
recipient_bcc_maps = proxy:ldap:/etc/postfix/ldap_recipient_bcc_maps_domain.cf, proxy:ldap:/etc/postfix/ldap_recipient_bcc_maps_user.cf
recipient_delimiter = +
relay_domains = $mydestination, proxy:ldap:/etc/postfix/ldap_relay_domains.cf
relay_recipient_maps = proxy:ldap:/etc/postfix/ldap_virtual_mailbox_maps.cf
relayhost =
sender_bcc_maps = proxy:ldap:/etc/postfix/ldap_sender_bcc_maps_domain.cf, proxy:ldap:/etc/postfix/ldap_sender_bcc_maps_user.cf
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
smtpd_data_restrictions = reject_unauth_pipelining
smtpd_enforce_tls = no
smtpd_helo_required = yes
smtpd_helo_restrictions = permit_mynetworks,permit_sasl_authenticated, check_helo_access pcre:/etc/postfix/helo_access.pcre
smtpd_recipient_restrictions = reject_unknown_sender_domain, reject_unknown_recipient_domain, reject_non_fqdn_sender, reject_non_fqdn_recipient, reject_unlisted_recipient, permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, reject_non_fqdn_helo_hostname, reject_invalid_helo_hostname, check_policy_service inet:127.0.0.1:10031
smtpd_reject_unlisted_recipient = yes
smtpd_reject_unlisted_sender = yes
smtpd_sasl_auth_enable = yes
smtpd_sasl_authenticated_header = no
smtpd_sasl_local_domain =
smtpd_sasl_path = dovecot-auth
smtpd_sasl_security_options = noanonymous
smtpd_sasl_type = dovecot
smtpd_sender_login_maps = proxy:ldap:/etc/postfix/ldap_sender_login_maps.cf
smtpd_sender_restrictions = permit_mynetworks, permit_sasl_authenticated
smtpd_tls_cert_file = /etc/ssl/certs/iRedMail_CA.pem
smtpd_tls_key_file = /etc/ssl/private/iRedMail.key
smtpd_tls_loglevel = 0
smtpd_tls_security_level = may
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtpd_use_tls = yes
tls_random_source = dev:/dev/urandom
transport_maps = proxy:ldap:/etc/postfix/ldap_transport_maps_user.cf, proxy:ldap:/etc/postfix/ldap_transport_maps_domain.cf
virtual_alias_maps = proxy:ldap:/etc/postfix/ldap_virtual_alias_maps.cf, proxy:ldap:/etc/postfix/ldap_virtual_group_maps.cf
virtual_gid_maps = static:1000
virtual_mailbox_base = /var/vmail/vmail01
virtual_mailbox_domains = proxy:ldap:/etc/postfix/ldap_virtual_mailbox_domains.cf
virtual_mailbox_maps = proxy:ldap:/etc/postfix/ldap_virtual_mailbox_maps.cf
virtual_minimum_uid = 1000
virtual_transport = dovecot
virtual_uid_maps = static:1000