Author: John Jetmore Date: To: Jeff Hahn CC: exim-users Subject: Re: [Exim] exim4 recipient verify .forward filter local_part_suffix
On Tue, 29 Apr 2003, Jeff Hahn wrote:
> Everything works fine locally (non-smtp)
<snip>
> mail from remote hosts across tcp/ip is "550 user unknown" for both
> addresses.
sounds like you didn;t restart the exim daemon.
> My real question. Why is no_verify set to begin with? Why are no_verify
> and no_expn set in the procmail router?
>
> What "holes" am I opening by changing this setting? What is the performance
> hit on a busy server?
no idea about performance, but allowing vrfy and expn allow spammers to
easily map out your email addresses. not a good idea in general.
