I can keyword this week but next week they are onto another tactic. It seems like every time I get it right the spammers change tactics and I'm in the same position. What are your expectations with spam filters? Is zero inbox spam realistic. These are mostly keyword spam and any outlook happens to decide to throw into the mix. I delete automatically the rbl and spf and directory harvesting. That may be justified by them wanting to check it for any false positives which I do not want to discourage by have 'too much junk in the junk folder'. They also are complaining about a lot of spam in the junk folder.
It has improved but the conversation with the users is feeling like they are frustrated. We have GFI Mail Essentials and I have been tweaking it and training the bayasian filter once a month with user submitted inbox spam. If email is not blocked by any scanning or filtering engine, it is sent to the user’s mailbox.My users are complaining about 5-10 spam in their inbox over the course of a weekday.Email is next checked by the New Senders filter.If configured, email monitoring is next executed and the appropriate actions taken.If configured, auto-replies are next sent to the sender.If an email goes through all the filters and is not identified as spam, it then goes to the next stage. Any email that fails a spam filter check is processed as configured in the anti-spam actions. The incoming email is filtered by the anti-spam filters.If the email matches a list, it will be processed by the list server. The email is checked to see if it is addressed to a list in the list server.If an email is considered as safe, it then goes to the next stage. Any email that is detected as containing malware is processed according to the actions configured. The email is scanned by the malware and content filtering engines.
SMTP level filters (Directory Harvesting, Greylist, IP Blocklist & IP DNS Blocklist) can be executed before the email body is received.Inbound emails are routed to GFI MailEssentials and processed as follows: Inbound mail filtering is the process through which incoming emails are scanned and filtered before delivery to users.
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