Block IP and Email address

hiep.pham · 11-05-2012, 03:33 PM

Hello:

One of our employee is getting a spoof/fake email that is sending from accounting@wemadeusa.com to support@wemadeusa.com

But accounting alias is not exist in out domain email.

Can you someone help me how to block the IP address coming from our postfix server and block the email address originating from.

Thank you,

-Hiep

TB0ne · 11-05-2012, 03:55 PM

Quote:

Originally Posted by hiep.pham

Hello:
One of our employee is getting a spoof/fake email that is sending from accounting@wemadeusa.com to support@wemadeusa.com

But accounting alias is not exist in out domain email. Can you someone help me how to block the IP address coming from our postfix server and block the email address originating from.

If you tried putting "linux postfix block ip address" and/or "block originating address" into Google, you'd have been able to find the answer. That's always a good starting point, and that's been pointed out to you before, too.

http://www.unixwiz.net/techtips/postfix-HELO.html
http://beginlinux.com/server_trainin...x-spam-control

hiep.pham · 11-05-2012, 04:06 PM

Thank you for your reply. But nothing that is I'm looking for when Google. Could you send me a link or instruction on how to stop spoof email?

TB0ne · 11-05-2012, 04:31 PM

Quote:

Originally Posted by hiep.pham

Thank you for your reply. But nothing that is I'm looking for when Google. Could you send me a link or instruction on how to stop spoof email?

Sorry, but Google has THOUSANDS of VERY easily found sites that explain what you're looking for, and how to do it. For:
"linux postfix block ip address" - 315,000 hits
"linux postfix block originating address" - 396,000 hits

Are you still going to say that you can't find anything on Google???? And I already looked it up for you, and posted the links in my reply...did you not bother to read them? Have you put ANY effort into this?

r0b0 · 11-06-2012, 04:09 AM

There's usually little help with blocking individual IP addresses or fake sender addresses. Spammers are very fast at changing their techniques so it is not feasible to react to each and every new form of spam e-mail received.

I would suggest that you implement a generic anti-spam solution (I recommend spamassassin) that will take care of most spam now and in the future.

TB0ne · 11-06-2012, 08:58 AM

Quote:

Originally Posted by r0b0

There's usually little help with blocking individual IP addresses or fake sender addresses. Spammers are very fast at changing their techniques so it is not feasible to react to each and every new form of spam e-mail received.

I would suggest that you implement a generic anti-spam solution (I recommend spamassassin) that will take care of most spam now and in the future.

+1 for this...I agree totally.