Hi.

I have strange problem with postfix and MX records in my dns.
I'm hosting many virtual domains with postfix, so i'm putting MX 10
pop.my.it on all my zone file.
Now with xDSL some of my customers wants their own mail server.
Now my configuration on DNS looks like MX 10 pop.customer1.it
But when i send a mail directed to usercustomer1.it, the mail arrives to my
server again.
If i send i mail from another connection to the internet, the mail arrives on
my server.
Sending a mail to userpop.customers1.it works well.
Where my fault?
Someone can help me?

# postconf
alias_database = hash:/etc/postfix/aliases
alias_maps = hash:/etc/postfix/aliases
allow_untrusted_routing = no
best_mx_transport =
biff = yes
bounce_notice_recipient = hostmaster
bounce_size_limit = 50000
canonical_maps =
command_directory = /usr/sbin
command_expansion_filter = 1234567890!%-_=+:,./abcdefghijklmnopqrstuvwxyzABCDEF
GHIJKLMNOPQRSTUVWXYZ
command_time_limit = 1000
daemon_directory = /usr/libexec/postfix
daemon_timeout = 18000
debug_peer_level = 2
debug_peer_list =
default_database_type = hash
default_destination_concurrency_limit = 10
default_destination_recipient_limit = 50
default_privs = nobody
default_process_limit = 50
default_transport = smtp
defer_transports =
delay_notice_recipient = hostmaster
delay_warning_time = 4
deliver_lock_attempts = 5
deliver_lock_delay = 1
disable_dns_lookups = no
disable_vrfy_command = yes
dont_remove = 0
double_bounce_sender = double-bounce
duplicate_filter_limit = 1000
empty_address_recipient = MAILER-DAEMON
error_notice_recipient = hostmaster
expand_owner_alias = no
fallback_relay =
fallback_transport =
fork_attempts = 5
fork_delay = 1
forward_path =
hash_queue_depth = 2
hash_queue_names = defer
header_checks =
header_size_limit = 102400
home_mailbox =
hopcount_limit = 50
ignore_mx_lookup_error = no
inet_interfaces = xxxxxxxxxxxxxxx
initial_destination_concurrency = 5
invalid_hostname_reject_code = 501
ipc_idle = 100
ipc_timeout = 3600
line_length_limit = 2048
local_command_shell =
local_destination_concurrency_limit = 2
local_destination_recipient_limit = 1
local_recipient_maps =
local_transport = local luser_relay =
mail_name = Postfix
mail_owner = postfix
mail_spool_directory = /var/spool/mail
mailbox_command = /usr/bin/procmail
mailbox_transport =
maps_rbl_reject_code = 554
masquerade_domains =
masquerade_exceptions =
max_idle = 100
max_use = 100
maximal_backoff_time = 4000
maximal_queue_lifetime = 4
message_size_limit = 15360000
minimal_backoff_time = 1000
mydestination = $myhostname, localhost.$mydomain, $mydomain, mail.$mydomain, www
.$mydomain, ftp.$mydomain, /etc/postfix/localdom
mydomain = xxxxxxxxxxxxxx
myhostname = xxxxxxxxxxxxx
mynetworks = xxxxx.xxx.xx.x.x.x.x
myorigin = $mydomain
non_fqdn_reject_code = 504
notify_classes = delay,policy,protocol,resource,software
owner_request_special = yes
prepend_delivered_header = command, file, forward
process_id_directory = pid
program_directory = /usr/libexec/postfix
propagate_unmatched_extensions = canonical, virtual
qmgr_fudge_factor = 100
qmgr_message_active_limit = 1000
qmgr_message_recipient_limit = 10000
qmgr_site_hog_factor = 90
queue_directory = /var/spool/postfix
queue_minfree = 0
queue_run_delay = 1000
recipient_canonical_maps =
recipient_delimiter =
reject_code = 554
relay_domains = $mydestination, /etc/postfix/rel_dom
relay_domains_reject_code = 554
relayhost =
relocated_maps =
sender_canonical_maps =
service_throttle_time = 60
smtp_connect_timeout = 0
smtp_data_done_timeout = 600
smtp_data_init_timeout = 120
smtp_data_xfer_timeout = 180
smtp_destination_concurrency_limit = $default_destination_concurrency_limit
smtp_destination_recipient_limit = $default_destination_recipient_limit
smtp_helo_timeout = 300
smtp_mail_timeout = 300
smtp_quit_timeout = 300
smtp_rcpt_timeout = 300
smtp_skip_4xx_greeting = no
smtp_skip_quit_response = yes
smtpd_banner = $myhostname ESMTP
smtpd_delay_reject = yes
smtpd_error_sleep_time = 5
smtpd_etrn_restrictions =
smtpd_hard_error_limit = 100
smtpd_helo_required = no
smtpd_helo_restrictions =
smtpd_recipient_limit = 1000
smtpd_recipient_restrictions = permit_smtpd_soft_error_limit = 10
smtpd_timeout = 300
soft_bounce = no
stale_lock_time = 500
strict_rfc821_envelopes = no
sun_mailtool_compatibility = no
swap_bangpath = yes
transport_maps =
transport_retry_time = 60
trigger_timeout = 10
unknown_address_reject_code = 450
unknown_client_reject_code = 450
unknown_hostname_reject_code = 450
virtual_maps = hash:/etc/postfix/virtual

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