Getmail lmtp spam filtering

zx1100e1

I am using getmail (https://github.com/christianbur/docker_projects) to sync some hotmail accounts. Messages received at hotmail are delivered to mailcow using imap push and delivered via LMTP in almost real time. This all works great.

The issue is hotmail’s spam filtering is extremely poor. It appears messages received in mailcow using LMTP are not filtered at all through any spam (rspamd) filtering. Rather they are directly delivered to the respective mailbox.

What do I need to configure on mailcow to change this behavior - specifically to scan these messages?

Or, is there a better way of receiving external mail using imap push? I originally did test the mailcow sync, but that uses polling rather than imap push.

Thank you

maberle

I had the same problem and switched back using a multi instance fetchmail configuration for correct IDLE processing. Maybe my project maberle/multifetchmail is helpful for your needs.

zx1100e1

Thanks for the reply. I’ll review it in detail when I get a chance.

Since my posting above, i’ve found alternate means of controlling the spam. Specifically, hotmail accounts forward to my backup mx (previous email host) which has reasonably good spam filtering. In addition, i’ve implemented some rules on the hotmail side based on spf/dkim/dmarc status. That has reduced spam significantly.

I’ve thought about updating sources that use the hotmail accounts to my own domain’s, but ultimately decided against it. Hotmail accounts are used as burner/disposable types. Don’t really want to disclose my domain to such sites.

All told, there’s 7 accounts across 2 services that are being sync’d. As I understand it, fetchmail would require 7 instances? The getmail solution has been working reasonably well once configured. In fact I haven’t touch the config in months.