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| -rw-r--r-- | README.md | 6 |
1 files changed, 5 insertions, 1 deletions
@@ -46,12 +46,16 @@ actually works perfectly. 2. **A Let's Encrypt SSL certificate for your site's `mail.` subdomain**. Create a nginx/apache site at `mail.<yourdomain.com>` and get a certificate for it with Let's Encrypt's [Certbot](https://certbot.eff.org/). -3. - You need two little DNS records set on your domain registrar's site/DNS +3. You need two little DNS records set on your domain registrar's site/DNS server: (1) an **MX record** pointing to your own main domain/IP and (2) a **CNAME record** for your `mail.` subdomain. 4. `apt purge` all your previous (failed) attempts to install and configure a mailserver. Get rid of _all_ your system settings for Postfix, Dovecot, OpenDKIM and everything else. This script builds off of a fresh install. +5. Some VPS providers block port 25 (used to send mail). You may need to + request that this port be opened to send mail successfully. Although I have + never had to do this on a Vultr VPS, others have had this issue so if you + cannot send, contact your VPS provider. ## Post-install requirement! |