Re: [Exim] Reject helo if helo is domain

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Author: Suresh Ramasubramanian
Date:  
To: Silmar A. Marca
CC: exim-users
Subject: Re: [Exim] Reject helo if helo is domain
Silmar A. Marca wrote:

> How to Reject helo if helo is domain?
> Example:
> - helo dommain.com.br
> - ....
> - rcpt to: <xxx@???>
> 5xx Reject helo....


This one is C049 in the config.samples tarball

> How to Reject if "Message-ID:" header using a rcpt domain?
> - ...
> - rcpt to: <xxx@???>
> - data


You can modify the above ruleset for this.

But this is prone to false positives - unless you have

1. inbound and outbound mailservers separated and apply this only to inbound

or

2. exempt trusted ips and authenticated users from this check

As for the message-id check, are you sure your user X isnt going to use
some other smtp server but from / message id are x@???, to
mail y@???, or support@???

    srs