Re: php mail() function
| From: | Paul M Foster | Date: | Fri, 23 Oct 2009 05:46:13 +0000 |
| Subject: | Re: php mail() function | ||
| References: | 1 2 3 4 5 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-299246@lists.php.net to get a copy of this message | ||
On Thu, Oct 22, 2009 at 11:40:34PM -0500, Shawn McKenzie wrote:
<snip>
> This is fairly accurate in premise but just to clarify. Mailservers
> don't operate like this by default and there is really no "trust".
> There are public blacklists that a mailserver can be configured to use
> that tell the mailserver not to accept mail from servers on the
> blacklist. The blacklists may contain servers that allow anyone to
> relay email, compromised servers, servers known for spam, ip ranges
> known to be held by spammers and *ranges that ISPs designate as dynamic
> or used for subscribers (DSL, cable, dial-up customers, etc. because
> they shouldn't be relaying email).
Regarding the rejection of dynamic IPs by smarthosts, are you saying
that it's a "blacklist" of sorts that lets them know an IP is dynamic?
(Serious question. I don't know the mechanism by which they determine
what is and isn't a dynamic IP.)
Paul
--
Paul M. Foster