Hello, I hope this is the right place ask and I hope finally I can get a correct answer. I searched the web, tried several examples but nothing did the way I expected. Alright let's go to the business:
I have an Exim instance running on Debian Jessie. For each mail that is received by Exim I would like to check if the reverse DNS for the sender domain matches the connecting IP and if not reject the mail. Consider the following scenarios. * A spammer sends an email from the IP 94.123.123.123 with [email protected] in the "From" field but the domain spammerwebsite.com doesn't resolve to 94.123.123.123. I want this to be blocked. * A spammer sends an email from the IP 94.123.123.123 with [email protected] in the "From" field. In this case example.com is my own domain and it cannot be located at 94.123.123.123. I want this to be blocked too. Please, tell me how to achieve that. P.S. * Where can I find the correct documentation? * How do I debug a configuration file? * Why can't the configuration start from an empty file? These are the questions that always pops into my mind while trying to configure Exim. -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
