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A comment on How to Run Your Own Mail Server (2017). Parent comment

Re:How to Run Your Own Mail Server (2017) by nerpderp83 on Friday January 26, 2018 @01:23PM (#16241546)
Having run both Exim and Postfix, I would highly recommend you run Postfix, if not for the security for the configuration.

If you can't run Postfix, run Exim in a container.

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Re:How to Run Your Own Mail Server (2017) by ekiara on Sunday January 28, 2018 @07:25AM (#16250986)
Could you expand on this? What security vulnerabilities does Exim4 have that you'd avoid just by choosing Postfix as an alternative?
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Re:How to Run Your Own Mail Server (2017) by nerpderp83 on Monday January 29, 2018 @07:21PM (#16261858)
Postfix has a very clear separation of concerns and least privledge in the use of lots of helper daemons. Exim4 doesn't not have this architecture and is less secure because of it.

http://www.postfix.org/OVERVIEW.html

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