Finding someones I.P address - checking to see if emails come from the same computer?

[rabbit]

Is there an easy way for somebody to check the i.p. address from 2 different e-mail addresses ? Someone I know has got e-mails from 2 different e-mail addresses, and wants to find out if they are really from the same person / computer ?

 

[jhegarty]

Re: Finding someones I.P address - checking to see if emails come from the same compu

Is there an easy way for somebody to check the i.p. address from 2 different e-mail addresses ? Someone I know has got e-mails from 2 different e-mail addresses, and wants to find out if they are really from the same person / computer ?

Where both mails send in a very short space of time ? most isp's change the ip address regularly....

 

[johndoe64]

Re: Finding someones I.P address - checking to see if emails come from the same compu

if you go into each email click view then options and look at the message box where it says internet headers you will see the IP address the mail came from as below.

Received: from l69wt9ahy7xxp4 [85.16.227.100] by ns3.iis5.net.

 

[rabbit]

Re: Finding someones I.P address - checking to see if emails come from the same compu

if you go into each email click view then options and look at the message box where it says internet headers you will see the IP address the mail came from as below.

Received: from l69wt9ahy7xxp4 [85.16.227.100] by ns3.iis5.net.

Thanks for the reply, but have clicked on "view" and there is no "options." There is "options" under "tools", but I cannot see " internet headers" anywhere ?

 

[aircobra19]

Re: Finding someones I.P address - checking to see if emails come from the same compu



AFAIK this won't work if the email came from a company network. You'll only get as far as the company and no further.

http://www.visualware.com/resources/tutorials/email.html

Please pay attention to these warnings when attempting to track email messages:

A) Host Names vs IP Addresses: Always base your tracking decisions based upon the IP Addresses that you find in the header information and not on host names (which are a lookup from the IP Address anyway). Because mapping an IP Address into a host name and then back into an IP Address may yield a different IP Address.

B) False Header Information: Be aware that spammers may try to insert fake Received: header lines into the Internet Headers of the email message to confuse you. Just follow the trail through the Received: header fields from mail server to mail server and use some common sense when the information makes no sense.

C) False IP Address: The IP Address that you finally end up at is the IP Address of the computer that sent the email. But is that computer the real sender, or a computer that was broken into, so that a false email could be sent. Or the sender could try to hide behind an 'anonymizer' service -- where you will get to the IP Address of the 'anonymizer' company.

D) IP Addresses Change: Do not assume that the sender's computer has a fixed, constant IP Address. This may be true in some cases, but most people who dial into the Internet almost always get a different IP Address each and every time they connect into the Internet. However, all is not lost. Many times you can report the IP Address and full email Internet Headers (which many times contain time-of-day information) to the person's ISP and the ISP can track this down to a unique end-user (by examining login and logout logs) and take action.

E) Viruses: Do not assume the worst of the person sending the email. They may have just been infected with a virus, which is using a person's computer to spread itself.

F) Open Mail Servers: Do not assume the worst of the company whose mail server was used to send the original email. They may be involved in the spam, but they also may just have a misconfigured email server, which is allowing a spammer to send the email through their mail server.

 

[Complainer]

Re: Finding someones I.P address - checking to see if emails come from the same compu

Is there an easy way for somebody to check the i.p. address from 2 different e-mail addresses ? Someone I know has got e-mails from 2 different e-mail addresses, and wants to find out if they are really from the same person / computer ?

A lot depends on how the emails were sent, whether via a webmail interface like hotmail or using MS Outlook. Did they come from company email addresses or what?

 

[rabbit]

Re: Finding someones I.P address - checking to see if emails come from the same compu

A lot depends on how the emails were sent, whether via a webmail interface like hotmail or using MS Outlook. Did they come from company email addresses or what?

One came from an eircom.net address, another came from a yahoo address.

eg x@eircom.net y@yahoo.ie

How would the recipient of an email from each find if they are the same person or computer ?

 

[jhegarty]

Re: Finding someones I.P address - checking to see if emails come from the same compu

What mail program are you using ?

 

[rabbit]

Re: Finding someones I.P address - checking to see if emails come from the same compu

It is someone else who asked me to find out, but I think they are using outlook express.

 

[battyb]

Re: Finding someones I.P address - checking to see if emails come from the same compu

If you are using Outlook Express open the mail, click on File - Properties (or press Alt + Enter)and this will open a window with 2 Tabs (General and Details)
Open the details Tab and a few lines down you will see
X-Originating-IP: [xxx.xxx.xxx.xxx].
This will tell you the IP of the sender.

 

[rabbit]

Re: Finding someones I.P address - checking to see if emails come from the same compu

thanks

 

[RainyDay]

Re: Finding someones I.P address - checking to see if emails come from the same compu

If you are using Outlook Express open the mail, click on File - Properties (or press Alt + Enter)and this will open a window with 2 Tabs (General and Details)
Open the details Tab and a few lines down you will see
X-Originating-IP: [xxx.xxx.xxx.xxx].
This will tell you the IP of the sender.

Am I right in thinking that this will only work if it was sent from a mail app like Outlook? You won't get this IP tracking if it was sent via webmail (Hotmail or Yahoo or whatever), as far as I know?