[Mailman-Users] which firewall ports does Mailman require to beopened?

Mark Sapiro mark at msapiro.net
Thu Apr 19 18:07:20 CEST 2012

David wrote:

>On an Ubuntu 10.04 server that does nothing but run Mailman (with Postfix)
>in a completely standard installation, which ports should be opened in
>iptables? Everything except Mailman and SSH is going to be denied.

Mailman itself requires only the ability to send to the outgoing SMTP
server which by default is localhost 25.

Postfix will require port 25 to be open for incoming mail.

If you are going to support Mailman's web interface, the port used to
access the web server (normally 80) must be open.

Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan

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