Configuring Postfix for Multiple Domains

[Tony Arnold]

Karl-Heins,

Which e-mail address gets bounced with the loop back message? Any domain
for which you wish to receive mail has to be listed in the
mydestinations line, other postfix will try to forward it based on MX
records which is itself, hence the message.

Regards,
Tony.

On Sat, 2006-09-02 at 22:25 -0400, Karl-Heinz Schulz wrote:
> I made the changes but none of the email were delivered.
> All MX records pint to mail.khschulz-lab.com
> 
> This is my main.cf file
> 
> # See /usr/share/postfix/main.cf.dist for a commented, more complete version
> 
> 
> # Debian specific:  Specifying a file name will cause the first
> # line of that file to be used as the name.  The Debian default
> # is /etc/mailname.
> #myorigin = /etc/mailname
> 
> smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
> biff = no
> 
> # appending .domain is the MUA's job.
> append_dot_mydomain = no
> 
> # Uncomment the next line to generate "delayed mail" warnings
> #delay_warning_time = 4h
> 
> # TLS parameters
> smtpd_tls_cert_file = /etc/postfix/ssl/smtpd.crt
> smtpd_tls_key_file = /etc/postfix/ssl/smtpd.key
> smtpd_use_tls = yes
> smtpd_tls_session_cache_database = btree:${queue_directory}/smtpd_scache
> smtp_tls_session_cache_database = btree:${queue_directory}/smtp_scache
> 
> # See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
> # information on enabling SSL in the smtp client.
> 
> myhostname = mail-khschulz-lab.com
> alias_maps = hash:/etc/aliases
> alias_database = hash:/etc/aliases
> #mydestination = localhost.localdomain, localhost, mail.khschulz-lab.com
> mydestination = $myhostname, localhost.$mydomain, khschulz-lab.com
> 
> 
> relayhost =  
> mynetworks = 127.0.0.0/8, 
> mailbox_command = 
> mailbox_size_limit = 0
> recipient_delimiter = +
> inet_interfaces = all
> inet_protocols = all
> 
> 
> smtpd_sasl_local_domain = 
> smtpd_sasl_auth_enable = yes
> smtpd_sasl_security_options = noanonymous
> broken_sasl_auth_clients = yes
> smtpd_recipient_restrictions =
> permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination
> smtpd_tls_auth_only = no
> smtp_use_tls = yes
> smtp_tls_note_starttls_offer = yes
> smtpd_tls_CAfile = /etc/postfix/ssl/cacert.pem
> smtpd_tls_loglevel = 1
> smtpd_tls_received_header = yes
> smtpd_tls_session_cache_timeout = 3600s
> tls_random_source = dev:/dev/urandom
> home_mailbox = Maildir/
> myorigin = /etc/mailname
> 
> -----Original Message-----
> From: ubuntu-users-bounces at lists.ubuntu.com
> [mailto:ubuntu-users-bounces at lists.ubuntu.com] On Behalf Of Paul Sladen
> Sent: Saturday, September 02, 2006 9:27 PM
> To: Ubuntu user technical support, not for general discussions
> Subject: Re: Configuring Postfix for Multiple Domains
> 
> On Sat, 2 Sep 2006, Karl-Heinz Schulz wrote:
> 
> Hello Karl-Heinz,
> 
> > How can I configure Postfix to allow me the use of several domains 
> > using one IP
> 
> The secret is a line similiar to:
> 
>   virtual_maps = hash:/etc/postfix/virtual
> 
> in the '/etc/postfix/main.cf' configuration.  The '/etc/postfix/virtual'
> file contains lines like:
> 
>   domain1.com           domain1.com
>   emaila at domain1.com    foo at this.machine.com
>   emailb at domain1.com    bar at this.machine.com
>   emailc at domain1.com    fred at flintstones.org
> 
>   domain2.net           domain2.net
>   emaila at domain2.net    moo at this.machine.com
>   @domain2.net          spam at somewhere.else.com
> 
> after being changed, the 'hash' version (binary representation) must be
> updated by running:
> 
>   sudo postmap /etc/postfix/virtual
> 
> Hope that helps,
> 
> 	-Paul
> --
> High on a tall bridge, surrounded by noisy lorries.  Nottingham, GB
> 
> 
-- 
Tony Arnold, IT Security Coordinator, University of Manchester,
IT Services Division, Kilburn Building, Oxford Road, Manchester M13 9PL.
T: +44 (0)161 275 6093, F: +44 (0)870 136 1004, M: +44 (0)773 330 0039
E: tony.arnold at manchester.ac.uk, H: http://www.man.ac.uk/Tony.Arnold