Incoming malformed junk mail

Carlos Morales

• December 14, 2018 16:33

Hi, I'm getting junk mail from addresses like this "info@example.cominfo@demo.com" It's not a valid email and I need to reject it as I create a rule for filtering.?

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  Shood

  • December 16, 2018 07:13

  Hi @carlos You can create a new file into /usr/local/cpanel/etc/exim/sysfilter/options directory with the below code, full details
  

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  cPanelMichael

  • December 17, 2018 20:16

  Hello @Carlos Morales, The information in the previous post should help if you want to filter emails from that address system wide. To filter emails from that address on an individual account, you can use the

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  keat63

  • December 18, 2018 12:55

  I see similar quite often, and what you'll find is that they will all be different and constantly changing, so creating a rule based on the sending source might not work. Threfor, I looked up 'regex double @' and came up with this.

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  Carlos Morales

  • January 14, 2019 20:12

  Thanks!

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  rpvw

  • January 14, 2019 20:59

  Be careful with the "/@.*@/" rule (and there is a variation circulating that uses ".+@.+@.+" that has issues as well) If a genuine user configured their SMTP address in their mail client in the format eg admin@domain.com or "admin@domain.com" the rule may match and you would lose the mail. Use your cPanel filter to configure and thoroughly test the regex before deploying it.

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  Carlos Morales

  • January 17, 2019 18:40

  Be careful with the "/@.*@/" rule (and there is a variation circulating that uses ".+@.+@.+" that has issues as well) If a genuine user configured their SMTP address in their mail client in the format eg admin@domain.com or "admin@domain.com" the rule may match and you would lose the mail. Use your cPanel filter to configure and thoroughly test the regex before deploying it.

  
  It does generate problems when trying to send emails. Can you put negative filters?

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