How to validate an email address
Results 1 to 10 of 36

Thread: How to validate an email address

Threaded View

  1. #18
    rebmeM roineS enilnOitnA steve.milner's Avatar
    Join Date
    Jul 2003
    Posts
    1,018
    Quote Originally Posted by moxquito View Post
    Good point...

    however mail is received into a domain via POP from an SMTP server, so my original statement still stands unless you are authorized on the domain to send mail, either by way of IP from the domain or authenticated by some other means, you will not be able to connect to the SMTP server to send mail.

    try randomly connecting to any SMTP server not on your domain and see if you can. If you find one the domain is open for relay. I guarantee you will not find many if any.
    *** Sigh ***

    This probably isn't worth a long argument....

    Personally, I think you're wrong.

    Mail is sent generally like this

    Mail Sending Client (Outlook) --SMTP(YMMV)--> Your Domain Mail Server --SMTP--> Receiving Domain Mail Server --POP(YMMV)--> Mail Receiving Client(Outlook)

    The bit where the Sending & Receiving mail servers talk to each other is almost always SMTP, and needs to support SMTP to remain compliant to the RFC in any case.

    This is the bit you do, by pretending to be a sending mail server when you telnet to the Receiving Mail Server on port 25.

    And if you want to PM me with your mail address, I'll connect to your domain's mail server, directly, and pretend to be Atilla The Hun and send you a mail

    Any yes Nihil, you're absolutely spot on, with out law enforcement all this is pretty much worthless at proving anything.

    Regards,

    Steve

    Regards,
    Steve
    Last edited by steve.milner; February 6th, 2009 at 04:14 PM.
    IT, e-commerce, Retail, Programme & Project Management, EPoS, Supply Chain and Logistic Services. Yorkshire. http://www.bigi.uk.com

Similar Threads

  1. An Intro to ProcMail
    By roswell1329 in forum The Security Tutorials Forum
    Replies: 4
    Last Post: December 10th, 2002, 11:35 PM
  2. Three ways to get your MAC address Tested on Win2K Server & WinXP Pro
    By blunt23 in forum AntiOnline's General Chit Chat
    Replies: 0
    Last Post: April 16th, 2002, 12:01 AM
  3. The Worlds Longest Thread!
    By Noble Hamlet in forum AntiOnline's General Chit Chat
    Replies: 1100
    Last Post: March 17th, 2002, 08:38 AM
  4. hehe...for those who hate AO newbies...
    By zigar in forum AntiOnline's General Chit Chat
    Replies: 10
    Last Post: February 22nd, 2002, 01:24 PM
  5. Anonymoity Tutorial
    By ac1dsp3ctrum in forum The Security Tutorials Forum
    Replies: 8
    Last Post: February 13th, 2002, 11:36 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •