DeBounce.io Email Validaton for Exim

Check outgoing email sent with Exim, the checks are performed with the DeBounce API.

Please consider limit rate: The maximum number of concurrent calls (parallel connections) is 10. If you validate emails with a higher speed, you will get an error

Installation

0. Install first

yum install cpan
cpan JSON

1. Add the follow line to exim.routers.pre.conf:

no_more

2. Add the following files:

/etc/exim.acl_check_recipient.pre.conf
/etc/exim.acl_script.pre.conf
/etc/exim.custom.pl

3. Change API key in:

/etc/exim.custom.pl:

4. Create Skip list

touch /etc/virtual/skip_validate_recipients

Disable DeBounce Email Validation

Should you want to disable the customization rename the files:

/etc/exim.acl_check_recipient.pre.conf

/etc/exim.acl_script.pre.conf

/etc/exim.custom.pl

to

/etc/exim.acl_check_recipient.pre.conf.OFF

/etc/exim.acl_script.pre.conf.OFF

/etc/exim.custom.pl.OFF

Add email adresses to the allow list

A skip file can be found here: /etc/virtual/skip_validate_recipients

Cache Location

We use a cache with a period of 1 month, this to avoid double checks, and thus minimize the costs for DeBounce.io API.

Cache is saved to /etc/virtual/validated_recipient/