<![CDATA[Outbound Spam Filtering]]>Hi Cloudron team,

As a Pro subscriber, I'm looking for guidance on outbound email spam filtering options.

Use Case:
I need to filter outbound emails for spam/malware before they're sent to protect our domain reputation and meet compliance requirements.

Current Setup:

  • Cloudron Pro subscription
  • Mail server with IPv6 support
  • Need to maintain our IP addresses for sending

Questions:

  1. Are there any built-in outbound filtering options I'm missing?
  2. Can external filtering services be integrated with Cloudron's mail setup?
  3. Are there plans to add outbound spam filtering features?
  4. Any workarounds other Pro users have implemented?

This is becoming a business requirement for us, so any guidance would be appreciated.

Thanks!

]]>https://forum.cloudron.io/topic/14981/outbound-spam-filteringRSS for NodeWed, 22 Jul 2026 01:22:51 GMTSat, 31 Jan 2026 03:29:50 GMT60<![CDATA[Reply to Outbound Spam Filtering on Tue, 10 Feb 2026 00:26:56 GMT]]>No, For spam filtering. I've moved to Postfix. I didn't like how locked down the MTA is.

]]>https://forum.cloudron.io/post/119976https://forum.cloudron.io/post/119976Tue, 10 Feb 2026 00:26:56 GMT<![CDATA[Reply to Outbound Spam Filtering on Thu, 05 Feb 2026 12:45:48 GMT]]>@cresdamo109
Hmm, no one who is not authenticated should be able to use the Cloudron mail system to send mails.
Cloudron and the mail system have several security features, see

Is that what you're asking?

]]>https://forum.cloudron.io/post/119707https://forum.cloudron.io/post/119707Thu, 05 Feb 2026 12:45:48 GMT<![CDATA[Reply to Outbound Spam Filtering on Thu, 05 Feb 2026 04:23:30 GMT]]>@joseph No, But i want to protect my domain from people who may send spam

]]>https://forum.cloudron.io/post/119693https://forum.cloudron.io/post/119693Thu, 05 Feb 2026 04:23:30 GMT<![CDATA[Reply to Outbound Spam Filtering on Tue, 03 Feb 2026 22:58:59 GMT]]>I believe the goal is to implement this for compliance purposes.

If you are using a SMTP relay server, you could use their API to implement a custom tool. Postmark, for example, has anti-spam tools that should help.

]]>https://forum.cloudron.io/post/119616https://forum.cloudron.io/post/119616Tue, 03 Feb 2026 22:58:59 GMT<![CDATA[Reply to Outbound Spam Filtering on Mon, 02 Feb 2026 08:20:45 GMT]]>@cresdamo109 said in Outbound Spam Filtering:

I need to filter outbound emails for spam/malware before they're sent to protect our domain reputation and meet compliance requirements.

Can you elaborate further on this? On Cloudron, emails are only sent by users or the apps. AFAIK, none of the apps generate spam. Are your users intentionally sending out spam?

]]>https://forum.cloudron.io/post/119540https://forum.cloudron.io/post/119540Mon, 02 Feb 2026 08:20:45 GMT<![CDATA[Reply to Outbound Spam Filtering on Mon, 02 Feb 2026 05:25:25 GMT]]>Thanks! I'm wondering, when are you guys adding outbound filtering?

]]>https://forum.cloudron.io/post/119530https://forum.cloudron.io/post/119530Mon, 02 Feb 2026 05:25:25 GMT<![CDATA[Reply to Outbound Spam Filtering on Sat, 31 Jan 2026 08:40:07 GMT]]>Hello @cresdamo109 and welcome to the Cloudron Forum

]]>https://forum.cloudron.io/post/119435https://forum.cloudron.io/post/119435Sat, 31 Jan 2026 08:40:07 GMT