Are there any SMTP servers I can install on my linux (ubuntu) or mac OS X?
I have msmtp as a client and I want to have a server.
closed as not constructive by allquixotic, Daniel Beck♦ Dec 21 '12 at 18:17
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Yes, there are many different SMTP server implementations you can install on GNU/Linux or Mac OS X. Hundreds.
See the wikipedia article on them.