How to deal with false negatives?

[fomox]

We have been using Proxmox as a mail gateway for our company since last week. Today some users ask me about some spams that weren't blocked or marked as a spam. Currently, we block spam level >= 10 and mark spam spams level >=5. So, how can we improve Proxmox spam engine to detect these spams?

TIA,
Fernando.

 

[martin]

We have been using Proxmox as a mail gateway for our company since last week. Today some users ask me about some spams that weren't blocked or marked as a spam. Currently, we block spam level >= 10 and mark spam spams level >=5. So, how can we improve Proxmox spam engine to detect these spams?

TIA,
Fernando.

Hi Fernando,

Please note, Proxmox has a lot of autolearn features, so after processing several thousand emails the recognition will get better and better. You can use now spamlevel 3 instead of 5 - I suggest to use the quarantine, so you do not loose messages.

additonal, you can set these options:
- reject unknown senders
- unknown clients

see admin guide chapter 5.3.2 Mail Proxy/Options.

upcoming features concerning spam detection in the next release:

- improved spam rules (especially for spam with images)
- razor network support (better bulk mail recocgnition)

martin