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I'm trying to recreate the Exim GHOST vulnerability over my local network and have installed Debian 7 with Exim version 4.8. However I can't seem to find where the helo_try_verify_hosts or helo_verify_hosts options are. I thought it'd be in the exim4.conf.template or update-exim4.conf.conf file.

Any ideas?

qz_99
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  • You mean Exim `4.80`? You can add it to `/etc/exim4/exim4.conf.template`'s main section or a file in `/etc/exim4/conf.d/main` if you are using a split config. – Piotr P. Karwasz Feb 06 '20 at 22:29
  • Yeah I only realised recently. I didn’t know you can just add the option yourself. Was looking everywhere to try find it haha. Thanks – qz_99 Feb 07 '20 at 23:07

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