# Postfix and mail receiver

**URL:** https://meta.discourse.org/t/postfix-and-mail-receiver/175467
**Category:** Self-hosting
**Tags:** mail-receiver
**Created:** [January 8, 2021, 9:41am UTC](https://meta.discourse.org/t/postfix-and-mail-receiver/175467 "2021-01-08T09:41:36Z")
**Posts on this page:** 1
**Showing post:** 5

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### Author: ![pfaffman](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/pfaffman/32/120154_2.png) [@pfaffman](https://meta.discourse.org/u/pfaffman)
#### Post date: [January 8, 2021, 12:52pm UTC](https://meta.discourse.org/t/postfix-and-mail-receiver/175467/5 "2021-01-08T12:52:34Z")

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You can have the discourse receiver bind to an ipv6 address (wrap the address in square brackets) and the external postfix act as a relay. It’s a little fiddly, as you have to make sure that the external postfix doesn’t bind to the ipv6 address, but it sounds like you can figure it out. I just did this to be able to run 15 mark receivers run on a single host (though only one is running now).

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