From 737eb4f3980560605d5c3b118b34ec4fb0b533d4 Mon Sep 17 00:00:00 2001 From: Antoine Eiche Date: Sun, 10 Jul 2022 09:25:43 +0200 Subject: [PATCH] docs: explicitly mention a reverse DNS entry is required Fixes https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/issues/234 --- docs/setup-guide.rst | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/docs/setup-guide.rst b/docs/setup-guide.rst index 4a39676..8127734 100644 --- a/docs/setup-guide.rst +++ b/docs/setup-guide.rst @@ -96,7 +96,14 @@ Set rDNS (reverse DNS) entry for server Wherever you have rented your server, you should be able to set reverse DNS entries for the IP’s you own. Add an entry resolving ``1.2.3.4`` -to ``mail.example.com`` +to ``mail.example.com``. + +.. warning:: + + We don't recommend setting up a mail server if you are not able to + set a reverse DNS on your public IP because sent emails would be + mostly marked as spam. Note that many residential ISP providers + don't allow you to set a reverse DNS entry. You can check this with