1 Topic by Rinaldus

  • Rinaldus
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  • Registered: 2022-10-12
  • Posts: 1

Topic: Reject messages with multiple addresses in "To" field

I receive a lot of spam with a lot of addresses (several hundreds) in "To" field. Is possible to write a rule for Postfix header_checks to reject all messages if "To" field has not only my address? I'm weak in writing these regex rules.

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2 Reply by ZhangHuangbin

  • ZhangHuangbin
  • ZhangHuangbin
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  • Registered: 2009-05-06
  • Posts: 31,135

Re: Reject messages with multiple addresses in "To" field

Try to match multiple "@" in To: / Cc: field.