los correos los recibo por ip a traves de relayhost en el postfix segun
tengo entendido porque soy nuevecito en este tema que encima de mi el
dns miempresa.empresa.cu apunta a mi ip externa
mi configuracion de postfix
relayhost = [ip server superior a mi]
# HELO restriction
smtpd_helo_required = yes
smtpd_helo_restrictions =
permit_mynetworks
permit_sasl_authenticated
reject_non_fqdn_helo_hostname
reject_invalid_helo_hostname
check_helo_access pcre:/etc/postfix/helo_access.pcre
# Sender restrictions
smtpd_sender_restrictions =
# reject_unknown_sender_domain
# reject_non_fqdn_sender
# reject_unlisted_sender
permit_mynetworks
permit_sasl_authenticated
# check_sender_access pcre:/etc/postfix/sender_access.pcre
# Recipient restrictions
smtpd_recipient_restrictions =
#reject_unknown_recipient_domain
#reject_non_fqdn_recipient
#reject_unlisted_recipient
#check_policy_service inet:127.0.0.1:
permit_mynetworks
permit_sasl_authenticated
reject_unauth_destination
# Data restrictions
smtpd_data_restrictions = reject_unauth_pipelining
# END-OF-MESSAGE restrictions
#smtpd_end_of_data_restrictions = check_policy_service
inet:127.0.0.1:
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 $smtpd_sender_restrictions
$sender_dependent_relayhost_maps
# Avoid duplicate recipient messages. Default is 'yes'.
enable_original_recipient = no
# Virtual support.
virtual_minimum_uid = 2000
virtual_uid_maps = static:2000
virtual_gid_maps = static:2000
virtual_mailbox_base = /var/vmail
# Do not set virtual_alias_domains.
virtual_alias_domains =
#
# Enable SASL authentication on port 25 and force TLS-encrypted SASL
authentication.
# WARNING: NOT RECOMMENDED to enable smtp auth on port 25, all end users
should
# be forced to submit email through port 587 instead.
#
#smtpd_sasl_auth_enable = yes
#smtpd_tls_auth_only = yes
#smtpd_sasl_security_options = noanonymous
# hostname
myhostname = mi nombre de host
myorigin = mi nombre de host
mydomain = mi nombre de host
# trusted SMTP clients which are allowed to relay mail through Postfix.
#
# Note: additional IP addresses/networks listed in mynetworks should be
listed
# in iRedAPD setting 'MYNETWORKS' too. for example:
#
# MYNETWORKS = ['xx.xx.xx.xx', 'xx.xx.xx.0/24', ...]
#
mynetworks = 127.0.0.1, ip de mis redes, la lan y la de mi server
superior
# Accepted local emails
mydestination = $myhostname, localhost, localhost.localdomain
alias_maps = hash:/etc/postfix/aliases
alias_database = hash:/etc/postfix/aliases
# Default message_size_limit. expresado en byte (2 mb)
message_size_limit = 2097152
# The set of characters that can separate a user name from its extension
# (example: user+foo), or a .forward file name from its extension
(example:
# .forward+foo).
# Postfix 2.11 and later supports multiple characters.
recipient_delimiter = +
#
# Lookup virtual mail accounts
#
transport_maps =
proxy:ldap:/etc/postfix/ldap/transport_maps_user.cf
proxy:ldap:/etc/postfix/ldap/transport_maps_domain.cf
sender_dependent_relayhost_maps =
proxy:ldap:/etc/postfix/ldap/sender_dependent_relayhost_maps_user.cf
proxy:ldap:/etc/postfix/ldap/sender_dependent_relayhost_maps_domain.cf
# Lookup table with the SASL login names that own the sender (MAIL FROM)
addresses.
smtpd_sender_login_maps =
proxy:ldap:/etc/postfix/ldap/sender_login_maps.cf
virtual_mailbox_domains =
proxy:ldap:/etc/postfix/ldap/virtual_mailbox_domains.cf
relay_domains =
$mydestination
proxy:ldap:/etc/postfix/ldap/relay_domains.cf
virtual_mailbox_maps =
proxy:ldap:/etc/postfix/ldap/virtual_mailbox_maps.cf
virtual_alias_maps =
proxy:ldap:/etc/postfix/ldap/virtual_alias_maps.cf
proxy:ldap:/etc/postfix/ldap/virtual_group_maps.cf
proxy:ldap:/etc/postfix/ldap/virtual_group_members_maps.cf
proxy:ldap:/etc/postfix/ldap/catchall_maps.cf
sender_bcc_maps =
proxy:ldap:/etc/postfix/ldap/sender_bcc_maps_user.cf
proxy:ldap:/etc/postfix/ldap/sender_bcc_maps_domain.cf
recipient_bcc_maps =
proxy:ldap:/etc/postfix/ldap/recipient_bcc_maps_user.cf
proxy:ldap:/etc/postfix/ldap/recipient_bcc_maps_domain.cf
postscreen_dnsbl_threshold = 2
postscreen_dnsbl_sites = zen.spamhaus.org*3 b.barracudacentral.org*2
postscreen_dnsbl_reply_map =
texthash:/etc/postfix/postscreen_dnsbl_reply
postscreen_access_list = permit_mynetworks,
cidr:/etc/postfix/postscreen_access.cidr
postscreen_greet_action = enforce
postscreen_dnsbl_action = enforce
postscreen_blacklist_action = enforce
postscreen_dnsbl_whitelist_threshold = -2
#
# Dovecot SASL
