Hi there,
From the research I’ve done, this topic comes up like a bad penny every 6 months or so. I think I’ve done all the walkthroughs I could find on how to disable it, and yet I’m still getting bounces between my spam processing company (external to our organization) and our mail server. The latest that came through was from one of our customers, whose domain has been whitelisted since I set the server up, and who has all the proper records (because we set them up!) says:
“550 5.7.1 Message rejected for spam content - Rule #2151620 (Misc/General)”
What was sent to me was plain text, no spam in it at all. It had to do with their website and problems with redirecting pages.
When I look in the Postfix logs and at /rspamd on the server, they are stating that no action was taken, but the spam provider’s logs show that the message was rejected. So that’s hardly “no action”.
My rspamd actions are:
- greylist = 90000
- add header = 99800
- rewrite subject = 99998
- reject = 99999
As you can see, I want to let my spam provider do the filtering and virus scanning. It’s what we pay them to do, so we don’t have to keep up on an ever evolving list of threats and threat actors. And so far for the last 12 years, they have done it very well for us, so I have no reason to want spam filtering on my mail server.
I also get the impression that rspamd does not just do spam filtering, it also serves other purposes. I totally understand that, but a comprehensive walk through somewhere of how to disable spam filtering on mailcow would be appreciated. You can put a ton of warnings and disclaimers all over it for the non-IT Professionals out there.
Oh, I should have put this before… this is on mailcow-dockerized v2025-07 running on debian 12 in a virtualized environment that we maintain in a datacenter.
Thank you all in advance! Once we get a few of these little problems worked out, we plan to recommend this to customers and have each contribute to the cost of mailcow. I’m waiting to get these small problems worked through before I send ours in so my business partners don’t grouse about the donation before the smaller issues are worked out. :-)
Paul