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haraka-plugin-mail_from.is_resolvable

v1.1.0

Published

Haraka plugin that checks that the domain used in MAIL FROM is resolvable to an MX record

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Git

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msimersonmsimerson

Keywords

haraka-pluginmail_from.is_resolvable

Readme

CI Test Status Code Climate

haraka-plugin-mail_from.is_resolvable

This plugin checks that the domain used in MAIL FROM is resolvable to an MX record.

Configuration

This plugin uses the INI-style file format and accepts the following options:

  • allow_mx_ip=[true | false]

    Allow MX records that return IP addresses instead of hostnames. This is not allowed as per the RFC, but some MTAs allow it.

  • [reject]no_mx=[true|false]

    Return DENY and reject the command if no MX record is found. Otherwise a DENYSOFT (TEMPFAIL) is returned and the client will retry later.

    DNS errors always return DENYSOFT, so this should be safe to enable.