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Revision as of 16:56, 28 May 2009

Adding a Second Postfix Instance on one Server

Base reference: http://advosys.ca/papers/email/58-postfix-instance.html

• Add an ip address to the server (e.g. 1.2.3.4)

ip addr add 1.2.3.4/8 dev eth0 # or see /etc/network/interfaces

• Copy the /etc/postfix directory and all files

rsync -av /etc/postfix /tmp/

• Create an additional spool directory

mkdir /tmp/spool

• Create an additional data directory

mkdir /tmp/data; chown postfix.postfix /tmp/data

• Edit the config files
  • /tmp/postfix/main.cf

inet_interfaces =1.2.3.4
smtp_bind_address = 1.2.3.4
queue_directory = /tmp/spool/
data_directory = /tmp/data

• • /etc/postfix/main.cf (default configuration file)

alternate_config_directories = /tmp/postfix/

• check & start

postfix -c /tmp/postfix/ check
postfix -c /tmp/postfix/ start