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Sendmail is running as default as mail server on Ubuntu. How to switch to postfix.

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3 Answers

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I have extensive experience with Postfix.

The quickest and easiest way to do this on Ubuntu is:

sudo apt-get install postfix

This will remove sendmail (it will install a version appropriate for postfix).

You will then need to configure postfix.

Do you also have questions about configuration?

To have decent settings choose "internet site" during the installation process.

You can get away with a config file as short as this:

sudo nano /etc/postfix/main.cf

myhostname = mail.somesite.com

mydestination = $myhostname

myorigin = $myhostname

relay_domains = $myhostname

Be very, very careful about avoiding setting up an open relay server. You'll quickly get blacklisted.

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You can also define mydomain but postfix is smart enough to get this info from myhostname. If you server hostname is something other then the domain from which you want to send email you would then want to define mydomain. – Patrick R Jan 31 '10 at 14:30
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up vote 1 down vote

Merely to switch?

sudo apt-get remove sendmail
sudo apt-get install postfix

To do all the configurations afterwards? Not sure - I've not worked with postfix.

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I would rather do this in ine command, like: aptitude install sendmail- postfix Otherwise all packages requiring a mailserver will be removed. – touchstone Jan 31 '10 at 20:41
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up vote 0 down vote

http://studyhat.blogspot.com/2009/10/postfix-server.html

check the above link

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