email spoofing - help

It appears someone is spoofing our email, Our CSR department received a lot of out of office replies from peiople we dont know or work with. After some investigation,

the actual email that sent it isn't one ours but looks like it,  until you look at the headers anbd see that it belongs to a company in texas. I contacted that company and they told me that the person who owned that email isn't employed there now, I advised them to remove that box and look at the rest of the PC's on their network.

what else can i do?
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when you look at the header ; what is the public IP of email server which generated and sent the email ? that server has an open relay that should be taken care of .
bbaoIT ConsultantCommented:
for me it seems like an error caused by that person's typo. once the his/her mailbox  is removed from their server, the issue should be fixed.

normally, spoofing emails do not work that way as its email address is commonly fake and its real contact info can't be simply traced back by the email address. your case does not look like that.
BMI-ITAuthor Commented:
Thanks guys, we use a AV/spam service (message labs) and have informed them of the issue, as the bounce backs are being filtered by the message labs vendor. It has appeared to have stopped for now, so may hopefully the offending company have killed that mailbox
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BMI-ITAuthor Commented:
Just an update, still getting the bouncebacks intermittently, we are not seeing the original message just the out of office replies, that comes back to us.

Still at a loss over this
bbaoIT ConsultantCommented:
are you able to post the mail header of one of the typical out-of-office replies?
BMI-ITAuthor Commented:
here u go,

this is from a bounce back from someone who was sent the original message,  it it came back to us.

message labs is our spam/av vendor, all email coming in is checked by them.

Michelle Rodriguez < is where the bounce back came from

and the CSR address is us.

so the CSR dept isn't bothered by this, I made a rule that any message with flaunt in the subject, gets redirected to our spam box. that way I can also keep track

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From: Michelle Rodriguez <>
To: "" <>
Subject: Automatic reply: [MARKETING] designs: If You Got It
 ... Flaunt It.
Thread-Topic: [MARKETING] designs: If You Got It ... Flaunt It.
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bbaoIT ConsultantCommented: seems to be a valid email address and using Google search you can see the person's contact information from several PDF files.

this kind of marketing email address normally will not be deleted even if the person has left the company, someone of the company should be monitoring its emails.

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BMI-ITAuthor Commented:
bbaoIT ConsultantCommented:
some details please?

thanks for your grade and points.
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