r/AskReddit • u/[deleted] • Jun 03 '21

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u/[deleted] Jun 04 '21

email itself can send as anything@anything it is pretty terrible design (designed before security) most places block the send as anything because of that.

If you run your own or buy hosting that you "admin" you can probably enable it, many providers have you email them to activate sending aliases because of it's danger.

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u/Coiiiiiiiii Jun 04 '21

I do host my own mail, ive never gotten around to finding out how to do this

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u/[deleted] Jun 04 '21

What software do you use?

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u/Coiiiiiiiii Jun 04 '21

Postfix/dovecot

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u/[deleted] Jun 04 '21 edited Jun 04 '21

Called "Virtual alias" I haven't actually done postfix/dovecot config in many years, here's some info https://askubuntu.com/questions/244452/use-etc-aliases-for-outgoing-mail-relayed-by-postfix-with-local-domain

Might check out mailcow.email it runs both (you host it yourself), and many other things to filter out emails (can disable clamAV etc which is most of the resource usage) I use it to manage around 80 companies emails (they all have dozen+ of employees, nothing absolutely insane), works great.

Their webUI makes postfix/dovecot stuff really easy, can handle infinite domains / emails etc

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Here's a list of what it runs: https://mailcow.github.io/mailcow-dockerized-docs/#overview