From 7a27988eddab1fbd66061fd90a2d361b7ccb188b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Peters?= Date: Mon, 11 May 2020 07:58:15 +0200 Subject: [PATCH] Update prerequisite-dns.md --- docs/prerequisite-dns.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/docs/prerequisite-dns.md b/docs/prerequisite-dns.md index 139a9a0d3..461c5c6b3 100644 --- a/docs/prerequisite-dns.md +++ b/docs/prerequisite-dns.md @@ -31,7 +31,7 @@ autoconfig IN CNAME mail In the example DNS zone file snippet below, a simple **SPF** TXT record is used to only allow THIS server (the MX) to send mail for your domain. Every other server is disallowed but able to ("`~all`"). Please refer to [SPF Project](http://www.open-spf.org/) for further reading. ``` -@ IN TXT "v=spf1 mx ~all" +@ IN TXT "v=spf1 mx a -all" ``` It is highly recommended to create a **DKIM** TXT record in your mailcow UI and set the corresponding TXT record in your DNS records. Please refer to [OpenDKIM](http://www.opendkim.org) for further reading.