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A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.

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Can i use mailcow on a dynamic IP with DDNS-updater for my usecase? (self.selfhosted)

submitted 9 months ago by kylian0087 to c/selfhosted

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Hello everyone,

I am currently running a server with the Pterodactyl panel for various game servers, and it has been working great for several years. However, I would like to set up a system for Pterodactyl to send out password reset emails when necessary. I am considering using Mailcow on the same host specifically for this purpose. Currently, I am using an application named DDNS-Updater to automatically update all records on Cloudflare when my IP changes. While my IP doesn't change often, it can happen; it occurred once this year. Would this pose an issue for a mail server? If the emails end up in the spam folder, it is not a major concern since they are only password reset emails. However, it is crucial that the emails reach the intended recipients.

Thank you.

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[–] [email protected] 1 points 9 months ago

If A and MX point to the same server you do not need the MX record.

Quite a few mail providers will also just blacklist all dynamic IPs in general.

I would recommend sending the mails via a smarthost (i.e. some authenticated SMTP connection).