I have a little problem with my external MailServer configuration.
I have a MailServer (domain external.com) which sends and receives mails from-to outside.
And then, into the LAN, I have another mailserver, with an internal domain called "inside.net".
The inside.net MailServer is used to send mails between all the people in my office, and the external mail is used just for 3 o 4 workers who need to send mails outside.
The configuration of the Internal Mailserver allows to send mails inside the office, and the External allows to send them outside.
So, the question is:
How can I configure External Postfix to allow it sending mails inside the office, so that Internal Mailserver could receive mails from an external account of MY external server.
This is my External Postfix main.cf:
smtpd_banner = $myhostname ESMTP $mail_name
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
maximal_queue_lifetime = 2d
message_size_limit = 5024000
virtual_mailbox_limit = 5024000
# Network parameters
myhostname = mail.ditecsa.com
mydestination = localhost, localhost.localdomain
inet_interfaces = all
mynetworks = 10.0.0.0/24
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
mailbox_size_limit = 0
recipient_delimiter = +