How to block a specific e-mail address?

[Zenbug]

My website has a mail form run by PHP, and I'm getting a lot of e-mails
sent through it that appear to contain my website's domain after the
'@', though I didn't send them. The e-mails contain no other content,
so I assume it's some kind of spam bot.

There must be a line of PHP that I can add that will basically say, "if
the e-mail address contains '@mydomainname.com', do not send."

I tried looking at php.net, but I can only find scripts that check if
the address is a valid one, which isn't good enough. I need to be able
to block a certain e-mail domain.

Thanks very much.
--ZenBug

[Oli Filth]

Zenbug said the following on 05/09/2005 19:45:

My website has a mail form run by PHP, and I'm getting a lot of e-mails
sent through it that appear to contain my website's domain after the
'@', though I didn't send them. The e-mails contain no other content,
so I assume it's some kind of spam bot.

There must be a line of PHP that I can add that will basically say, "if
the e-mail address contains '@mydomainname.com', do not send."

Regular expressions?
http://www.php.net/pcre

Or even a simple string search?
http://www.php.net/strpos

--
Oli

[Sandman]

In article <11**********************@z14g2000cwz.googlegroups .com>,
"Zenbug" <ze****@gmail.com> wrote:

My website has a mail form run by PHP, and I'm getting a lot of e-mails
sent through it that appear to contain my website's domain after the
'@', though I didn't send them. The e-mails contain no other content,
so I assume it's some kind of spam bot.

There must be a line of PHP that I can add that will basically say, "if
the e-mail address contains '@mydomainname.com', do not send."

I tried looking at php.net, but I can only find scripts that check if
the address is a valid one, which isn't good enough. I need to be able
to block a certain e-mail domain.

<?
if (!strstr($_POST["email"], "baddomain.com")){
mail(...);
}
?>
--
Sandman[.net]

[Barry]

I would like to know what is causing this, as
it is happening to some of my site aswell.

Is there some new spambot out there?

Barry

Zenbug wrote:

My website has a mail form run by PHP, and I'm getting a lot of e-mails
sent through it that appear to contain my website's domain after the
'@', though I didn't send them. The e-mails contain no other content,
so I assume it's some kind of spam bot.

There must be a line of PHP that I can add that will basically say, "if
the e-mail address contains '@mydomainname.com', do not send."

I tried looking at php.net, but I can only find scripts that check if
the address is a valid one, which isn't good enough. I need to be able
to block a certain e-mail domain.

Thanks very much.
--ZenBug

[Steve]

My website has a mail form run by PHP, and I'm getting a lot of e-mails
sent through it that appear to contain my website's domain after the
'@', though I didn't send them. The e-mails contain no other content,
so I assume it's some kind of spam bot.

Just out of interest, can this form be submitted using a link? It may
be just a search engine bot clicking on everything to spider your site.
In that case, you can exclude the page with the form using robots.txt.

---
Steve

[Zenbug]

Thanks for the help, all.

Steve: In point of fact, yes, the code that sends the message is
contained in its own page, so if I load it up in a browser, a message
will be sent. I actually just added code that won't send the message
if the 'comments' field is left blank, so that should help if it's a
search engine spider.

Can you tell me how to use robots.txt though? That sounds like a good
idea anyway.

--ZenBug

[Steve]

Can you tell me how to use robots.txt though? That sounds like a good
idea anyway.

See <http://www.searchengineworld.com/robots/robots_tutorial.htm> and
<http://www.robotstxt.org/wc/robots.html> for details. Note that only
compliant robots would be excluded; spam harvesters and the like will
ignore the file.

---
Steve