Mail with fake id using my smtp server

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Hi.. friends, I have received an e-mail with fake email id, the interesting thing is that my smtp server has used in this mail.

Have anybody some idea about this, and any suggestion how to tackle this problem or stop this fake email id

Thanks in advance
Parveen Rathi

Posted 19-Jul-12 21:50pm

Parveen Rathi

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Mehdi Gholam · Answer 1 · 2012-07-19T22:14:00

Solution 1

Most email server require authentication for SMTP sending to block anonymous spam emails.

Configure your email server to require SMTP authentication.

Posted 19-Jul-12 22:14pm

Mehdi Gholam

Comments

Parveen Rathi 20-Jul-12 4:31am

I think the mail is going on using my code because IP address has found is my IP address. So how to authenticate SMTP. Please explain

Mehdi Gholam 20-Jul-12 4:39am

Check your mail server configuration, contact your administrator.

TorstenH. 20-Jul-12 5:42am

This is correct, configure your SMTP to not accept anonymous connections.
The IP-Address will be yours because the SMTP is yours.

Most SMTP do accept any message from any sender and pass it on by default. You can only limit it if you limit that to authentication based use.

Mehdi Gholam 20-Jul-12 5:45am

Thanks Torsten!

Bernhard Hiller · Answer 2 · 2012-07-19T22:24:00

I do not fully understand what you want to tell us. What is that "fake email id"?
If that is simply a "FROM" entry ("sender") of someone who did not send the email, following information: an email can be sent by someone on behalf of someone else. E.g. a secretary sends an email on behalf of her boss - that's nothing ununsual.
Consequently, many email servers are configured to allow a "FROM" entry to be different from he logged-in user.
But typical "free mail" providers do not allow that (here, the sender shown in the "FROM" header must be the user who logged in to the SMTP server).
Also, the receiving email server might check for consistency on the domain level: i.e. does the server which sends the email belong to the domain shown in the FROM header.
A decade ago, I experimented with Linux and set up my own email server. I could send emails to my friends as "president@whitehouse.gov" - no problem at that time...