topic Re: spoofing sendmail in Operating System - HP-UX

spoofing sendmail

ROSS HANSON — Wed, 29 Sep 2010 19:54:03 GMT

I am trying to "spoof" sendmail. Instead of saying that the mail is coming from root@domain.com I am trying to say it is coming from dba@domain.com. No, what we are doing is for work only. We are trying to send this to about 150 recipients. I have been trying to:
sendmail -f dba@domain.com
body
.
but I never receive the email. We are using sendmail 8.13.3
any help would be appreciated

Re: spoofing sendmail

Steven Schweda — Wed, 29 Sep 2010 20:57:02 GMT

> [...] I have been trying to:
> sendmail -f dba@domain.com
> body
> .
> but I never receive the email. [...]

Uh, I see whom it's from, but I don't see
whom it's to. (Or are you using some new
intuitive interface to sendmail?)

Re: spoofing sendmail

ROSS HANSON — Wed, 29 Sep 2010 20:59:25 GMT

No, no new interface at all. Isn't that the correct way???

Re: spoofing sendmail

Steven Schweda — Thu, 30 Sep 2010 01:26:28 GMT

> [...] Isn't that the correct way???

To send a message TO WHOM? Who is the
intended recipient? And where did you
specify him/her/it/them?

Re: spoofing sendmail

Jim Walls — Thu, 30 Sep 2010 01:54:34 GMT

These references may help you:

http://www.sendmail.org/m4/masquerading.html

http://www.brandonhutchinson.com/Sendmail_masquerading.html

Re: spoofing sendmail

Hakki Aydin Ucar — Thu, 30 Sep 2010 08:13:19 GMT

Hi,
The syntax is;

echo test |mailx -s "Subject Part" â r â from addressâ recipient1@domain.com.,recipient2@domain.com.

Re: spoofing sendmail

Steven Schweda — Thu, 30 Sep 2010 12:04:26 GMT

> The syntax is;
> [...]

It should be possible to specify one or more
recipients using sendmail, too. (mailx has
some handy features, but its intuition is
probably not superior to that of sendmail.)

Re: spoofing sendmail

ROSS HANSON — Thu, 30 Sep 2010 13:12:28 GMT

I am trying to do this in sendmail though

Re: spoofing sendmail

Patrick Wallek — Thu, 30 Sep 2010 13:14:57 GMT

This worked for me:

# /usr/sbin/sendmail -f fido@fido.com me@myaddress.com
test
test
test
.

I received the message and the from said fido@fido.com.

Re: spoofing sendmail

Steven Schweda — Thu, 30 Sep 2010 15:26:35 GMT

> I am trying to do this in sendmail though

Have you tried specifying a recipient yet?

I'll stop asking now.

Re: spoofing sendmail

ROSS HANSON — Thu, 30 Sep 2010 18:45:46 GMT

Yes, this is in a script. so, the recipients are in a while loop.

What I am currenly doing is sending the email to myself:

sendmail -f dba@domain.com myself@domain.com

the myself@domain.com will be replaced in the while loop with the appropriate names

Re: spoofing sendmail

Patrick Wallek — Thu, 30 Sep 2010 19:42:13 GMT

If you're not receiving the e-mail, are you seeing anything in /var/adm/syslog/mail.log? What happens if you run the command 'mailq' to look at the mail queue? Does anything show up? If so, what is the reason for the message being queued?

Re: spoofing sendmail

ROSS HANSON — Fri, 01 Oct 2010 15:12:40 GMT

running mailq I receive nothing
/var/adm/syslog/mail.log this says that the message has been delivered though not in my email, spam or junk file does it appear

Re: spoofing sendmail

Steven Schweda — Fri, 01 Oct 2010 17:58:23 GMT

> sendmail -f dba@domain.com myself@domain.com

Does "-f dba@domain.com" cause the problem,
or can you simply not send e-mail from this
system to your desired destination?

> Yes, this is in a script. [...]

My psychic powers are too weak to show me
exactly what your script does. Is your
problem with the script or with the command
itself? Have you tried running a simple
command manually (not in the script)?

> [...] the message has been delivered though
> not in my email, spam or junk file does it
> appear

What, exactly, is the system which is
supposed to be receiving this e-mail? Hint:
Using "domain.com" to hide potentially useful
information may not be the best way to get
useful answers.