1 Topic by bipsen

  • bipsen
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  • Registered: 2015-10-17
  • Posts: 13

Topic: Spam control ?

==== Required information ====
- iRedMail version 0.9.2
- Linux/BSD distribution name and version: CentOS 6.7
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx): Apache
- Manage mail accounts with iRedAdmin-Pro? No
====

Hi

I wonder if it somehow is possible to "tighten" security regarding incoming SPAM - so that messages without SPF or DKIM either automatically is considered SPAM, or it maybe even is possibel to reject messages from servers/organisations without valid SPF/DKIM setup ?

/Brian

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Spider Email Archiver: On-Premises, lightweight email archiving software developed by iRedMail team. Supports Amazon S3 compatible storage and custom branding.

2 Reply by ZhangHuangbin

  • ZhangHuangbin
  • ZhangHuangbin
  • iRedMail Developers
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  • Registered: 2009-05-06
  • Posts: 31,165

Re: Spam control ?

Amavisd will invoke SpamAssassin to check SPF/DKIM headers, but both are tagged with a not very low score. You may want to check mail header of these spam messages.

If you want to increase the score of failed SPF, check this:
http://wiki.apache.org/spamassassin/Rules/SPF_FAIL