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Check E-mail Address Before Registration
Version: 1.00, by echamberlain echamberlain is offline
Developer Last Online: Mar 2017 Show Printable Version Email this Page

Category: Miscellaneous Hacks - Version: 3.6.5 Rating:
Released: 04-10-2007 Last Update: 04-10-2007 Installs: 265
Uses Plugins
 
No support by the author.

This mod checks that the user supplied e-mail address is a real address before allowing registration to continue.

Even though we use Verify Email address in Registration, I still get tired of cleaning up bad e-mail addresses.

This mod integrates with the user registration process and performs the following tasks:
  1. Syntax checking (configurable) to make sure what was entered is an e-mail address.
  2. Looks up the MX records for the e-mail address.
  3. Cycles through the mail servers by connecting to each mail server and tries to verify that the e-mail address is a valid address. The cycling stops as soon as a mail server returns a valid or invalid user.
Installation

Install the attached xml product file. The product is active at installation and most sites should run fine with the default settings.

If you run the default configuration, e-mail addresses will be rejected when:
  • Syntax doesn't look like an e-mail address
  • MX record or A record does not exist for the e-mail domain
  • A mail server reports that the e-mail address is invalid
If you run the default configuration, e-mail address will pass when:
  • Syntax looks like an e-mail address
  • MX record or A record exists for the e-mail domain
  • All mail servers timeout or a mail server reports that the e-mail address is valid.
Configuration

This mod is managed from the vBulletin Options -> User Registration Options page. The following options are added to the page:
  • Validate Registration E-mail Addresses - Enter a regular expression to use when validating e-mail addresses. Leave the field blank to disable validation. The recommendation is to use the default value.
  • Treat E-mail Address As Valid If All Mail Hosts Timeout - If all the mail hosts timeout, should the e-mail address be treated as valid?

    NOTE: Changing this to no will reject valid users when your hosting provider doesn't allow fsockopen calls or when the timeout value is too short. The SMTP RFC's allow for a connection request response wait time of up to minues, since this test is real-time with a waiting user, waiting minutes is impractical. Just because a host timesout doesn't mean the host is not there.
  • Mail Host Timeout Value (Seconds) - Length of time to wait when trying to open a session with a mail host.

    NOTE: Don't set this value too large, if a domain has more than one MX record, the user will have to wait for each connection attempt.
  • Does This Host Support fsockopen? - A PHP fsockopen call is used to try and connect to the remote mail servers. Some systems may not support or block these calls. With the value set to Yes, the connection attempts will timeout. GoDaddy's Shared Hosting is an example of a hosting provider that blocks outbound connection attempts.

    With this value set to no, the system will try to look up the MX records, but will not attempt to connect to each mail server.

Show Your Support

  • This modification may not be copied, reproduced or published elsewhere without author's permission.

Comments
  #52  
Old 08-11-2007, 04:28 PM
ickie ickie is offline
 
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I have been looking for this for years, and this should be a part of VBulletin

We are a big forums and 10% of all new sign ups give bogus email Addy's and my server tries very hard trying to deliver their activation email, this has stopped all the hassle.

My email log is a weekly log and hundreds of entries are "no such user", since I installed this my log has not grown.

Thank you for this very fine hack.
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  #53  
Old 08-11-2007, 04:47 PM
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Mecho Mecho is offline
 
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awesome ... i clicked install before but i forgot to import it . it works perfect in vb 3.6.8

thanks
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  #54  
Old 08-14-2007, 09:43 AM
BadgerDog BadgerDog is offline
 
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Uninstalled....

Again, as I said above, nice idea but far too many erroneous rejects, particularly from @aol members as well as private company email servers.

I think a good idea would be to update this mod adding an option for the user to put in email address extensions that get accepted regardless of the check, therby overriding the false result returns.

Thanks to the developer for the attempt though ...

Regards,
Badger
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  #55  
Old 08-15-2007, 11:56 AM
SliceofLife SliceofLife is offline
 
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Thank you!

*clicks installed
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  #56  
Old 08-18-2007, 11:43 PM
nnjj.net nnjj.net is offline
 
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does this mod have any relationship with the problem of that new users can't recive the activation email?!!!
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  #57  
Old 08-21-2007, 12:27 AM
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nickypoooo nickypoooo is offline
 
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Installed, thanks alot.
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  #58  
Old 09-05-2007, 01:59 AM
FoReX FoReX is offline
 
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Thanks. I installed 3.6.8. that's working perfect..
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  #59  
Old 09-05-2007, 02:19 AM
frostyIntrepid frostyIntrepid is offline
 
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works great, thanks!
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  #60  
Old 09-09-2007, 09:09 PM
howardf howardf is offline
 
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Your mod is exactly what I was looking for.

I don't want to mess up the installation. Can you tell me exactly where in the directory hierarchy I should place the XML file?

Many thanks.

Howard
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  #61  
Old 09-10-2007, 08:58 PM
howardf howardf is offline
 
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Eric,

A great mod and just what I was looking for.

So I don't mess up, please tell me where in the directory hierarchy the xml file should be placed.

Many thanks.
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