How Does CRServers Spam Filtering Work?

Your email is protected by a multi-layer spam filtering system:

1. Proxmox Mail Gateway (PMG) — Your email first passes through our dedicated spam filter, which blocks viruses, checks sender reputation against global blacklists, and scores suspicious messages.
2. SpamAssassin — Messages that pass the first filter are scored by SpamAssassin on our mail server. It analyzes content, links, headers, and sender patterns.
3. Spam Folder Delivery — Messages identified as spam are delivered to your Spam folder instead of being deleted. You can review them anytime.

How to Check Your Spam Folder

Roundcube Webmail

Access at https://mail.YOURDOMAIN/roundcube/

• Look for the Spam folder in the left sidebar
• Click on it to see filtered messages
• Drag messages to Inbox if they're not spam

Outlook / Thunderbird / Apple Mail

• Your Spam folder should appear automatically under your inbox
• If not visible, subscribe to it: Right-click your account → Subscribe → check "Spam"

Mobile (iPhone / Android)

• Go to your email account → look for the Spam or Junk folder
• On iPhone: Settings → Mail → your account → verify the "Junk" mailbox is enabled

How to Whitelist a Sender (Stop Marking as Spam)

1. Login to your SiteWorx panel at https://YOURDOMAIN:2443/siteworx/
2. Go to Email → SpamAssassin
3. Under Whitelist, add the sender's email address
4. Click Save

How to Adjust Spam Sensitivity

1. Login to SiteWorx → Email → SpamAssassin
2. Change Required Score:
   • 3 = Very aggressive (catches more spam, higher false positive risk)
   • 5 = Recommended (default, good balance)
   • 7 = Relaxed (less spam caught, fewer false positives)
3. Click Save

I'm Not Receiving an Expected Email

1. Check your Spam folder first — most "missing" emails are there
2. Check with the sender — ask them to verify the email address and try resending
3. Contact support — we can check our mail gateway quarantine and server logs to trace the message