0

Usually the Message-ID header from a specific sender that uses a yahoo email account is like this:

Message-ID: <1415953854.62001.YahooMailNeo@web172504.mail.ir2.yahoo.com>

And comes along with the X-Mailer header

X-Mailer: YahooMailWebService/0.8.203.733

But sometimes the email headers of the same sender may include a different Message-ID header:

Message-ID: <763084588.2169028.1420389380369.JavaMail.yahoo@jws11101g.mail.ir2.yahoo.com>

In which cases there is no X-Mailer header.

Here it says that the Message-ID header of the first case (...YahooMailNeo...) indicates it was sent via Yahoo Webmail from Chrome.

So does anybody know which interface does JavaMail.yahoo of the second case indicate?

Rempelos
  • 1,220
  • 10
  • 18
  • I'm guessing it comes from an API. – Barmar Feb 07 '15 at 00:39
  • Yes I know that there exists a JavaMail API but I'm trying to find out which application/interface the sender used in this case. – Rempelos Feb 07 '15 at 00:41
  • The JavaMail API _is_ the interface the sender used. Are you looking for something like the domain of the client application? – Barmar Feb 07 '15 at 01:11
  • I want to know which email client he used (web-based or not). I suppose that this Message-ID indicates an email client that uses the JavaMail API, but which client is that? – Rempelos Feb 07 '15 at 01:51
  • he didn't use an email client. He used some random application that uses the API. – Barmar Feb 07 '15 at 01:52
  • I don't understand. What "random" application uses the JavaMail API? In the first case we know that he used Yahoo Webmail from Chrome (according to the link). – Rempelos Feb 07 '15 at 01:56
  • Anyone who wants to can write an application that uses an API. – Barmar Feb 07 '15 at 01:57
  • See http://stackoverflow.com/questions/11356237/sending-mail-from-yahoo-id-to-other-email-ids-using-javamail-api for example. The poster wrote their own application that uses the JavaMail API. – Barmar Feb 07 '15 at 01:58
  • Ok I see what you mean, but this mail comes from a person who is not a programmer and is certainly using an email client. This is why I'm asking, I supposed that "JavaMail.yahoo" in the Message-ID indicates a specific client. – Rempelos Feb 07 '15 at 02:01
  • I don't think it means a specific client. He's just using some client that happens to use the JavaMail API. – Barmar Feb 07 '15 at 02:09

0 Answers0