Hi all,

I've set up Postfix on Debian with virtual domains. Receiving mail works fine and I can download my e-mail into Outlook no problem. However, when I try to send mail from outlook to an address at a domain which I don't host, i.e. someguy@yahoo.com, I get the error:

Recipient address rejected: Relay access denied

/etc/main.cf:

----------

command_directory = /usr/sbin
daemon_directory = /usr/lib/postfix
program_directory = /usr/lib/postfix

smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
setgid_group = postdrop
biff = no

append_dot_mydomain = no
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = mydomain.com, localhost
mynetworks = 127.0.0.0/8
mailbox_command =
mailbox_size_limit = 0
recipient_delimiter = +

virtual_maps = hash:/etc/postfix/virtual
inet_interfaces = 127.0.0.1, 67.18.176.223

----------

/etc/virtual:

-----------

mydomain.com virtual
rob@mydomain.com robmydomaincom

----------

Where 'robmydomaincom' is a valid linux user account.

Any ideas what I need to do to get things working?

Thanks in advance,

Rob

Hi Rob,

Since you are not sending mail from the localhost, relaying is denied by default. You can open relaying for specific machines(the ones that run outlookexpress and are used to send mail). BEWARE: do not open relaying for every machine on the internet, else your mail server might get marked as an open relay and most domains will stop accessing mails from you.

I dont recall the exact command used to configure postfix to relay for specific domains, but a google on "postfix relaying" will through up some usable results.

Cheers

Subhasis