1 Topic by craig

  • craig
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  • Registered: 2013-09-04
  • Posts: 272

Topic: Block attachments for one domain, but not others

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====

Hi Zhang,

I know how I can block certain attachments for all domains on my system ( https://www.cyberciti.biz/tips/postfix- … files.html ), but how can I block (for example) ".doc" attachments to and from example.com, but let them through on example.net and example.org?

Pro obviously has a way to block IP and email addresses and domains for individual hosted domains, so I'm wondering if there's a similar technique I can use to accomplish the above.

Thanks.


Craig

----

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2 Reply by ZhangHuangbin

  • ZhangHuangbin
  • ZhangHuangbin
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  • Registered: 2009-05-06
  • Posts: 31,088

Re: Block attachments for one domain, but not others

You can achieve this by creating per-domain spam policy (in SQL table "amavisd.policy")

3 Reply by craig

  • craig
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  • From: Canada
  • Registered: 2013-09-04
  • Posts: 272

Re: Block attachments for one domain, but not others

Thanks Zhang. I looked at docs.iredmail.org but didn't see anything that can help me with this. Any suggestions?

4 Reply by ZhangHuangbin

  • ZhangHuangbin
  • ZhangHuangbin
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  • Registered: 2009-05-06
  • Posts: 31,088

Re: Block attachments for one domain, but not others

- Check existing SQL records in "amavisd.policy" for "@." account for general settings.
- Update amavisd config file to define some rules to block '.doc' attachment. For example:

%banned_rules = (
  'NO-MS-DOC'=> new_RE( qr'^\.(doc|docx)$' ),
  'DEFAULT'   => $banned_filename_re,
);

Note: rule 'DEFAULT' is required.
- Update SQL column `policy.banned_rulenames`, specify the name defined in %banned_rules. e.g. 'NO-MS-DOC'.