Hi community,
after playing with the settings I think spam filtering works pretty good right now on our XGv17 and I'd like to discuss the settings and set up something like a best practice. Especially the list of RBL services could be expanded.
Currently I work with the following settings:
-> General settings
SMTP Deployment Mode:
Device acts as a Mail Transfer Agent (MTA)
SMTP Settings:
Verify Sender’s IP Reputation: true
Confirm Spam Action: Drop
Probable Spam Action: Accept
Malware Protection:
Primary Anti-Virus Engine: Sophos
Advanced SMTP Settings
Reject invalid HELO or missing RDNS: true
Do strict RDNS checks: false
Scan Outgoing Mails: true
-> Policy
Spam Protection:
Check for Inbound Spam: true
Check for Virus Outbreak: false (don't know what it does)
Check for Outbound Spam: true
Use Greylisting: false (currently not working as it should with 17 MR5)
Check for RBL: true
Recipient Verification: With Callout
Malware Protection:
Scanning: Dual Anti-Virus
Selected Antivirus Action: Drop
Notify Sender: false
Quarantine unscannable content: true
Detect zero-day threats with Sandstorm: false (no licence)
File Protection:
currently off
Data Protection:
currently off
-> RBL Services
bl.spamcop.net
zen.spamhaus.org
dnsbl-1.uceprotect.net
-> RBL Services I wouldn't recommend (false positives)
dnsbl.sorbs.net
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