UNDELIVERED MAIL

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greenleader

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I've got a lot of mail send from my postmaster that are undelivered. This mail were never send by me, but it is said that the mail I've tried to send, was not delivered to so and so. Sometimes my inbox is flooded with a 140 of them. I am using Poptray to check my mail before downloading them. So when I see something like this, I delete it before it can harm my PC. Where do they come from?
I do have a good Internet security program that mail for Spam and all the ugly stuff.
I do think that my server is stopping the actual mail, but what can I do from my side.
Here is one of the messages:

"The following message to <[email protected]> was undeliverable.
The reason for the problem:
5.3.0 - Other mail system problem 550-'5.7.1 [196.25.211.37 7] Our system has detected that this message is\n5.7.1 likely unsolicited mail. To reduce the amount of spam sent to Gmail,\n5.7.1 this message has been blocked. Please visit\n5.7.1 http://support.google.com/mail/bin/answer.py?hl=en&answer=188131 for\n5.7.1 more information. c5si7371603wja.59 - gsmtp' "

Thanks
 
You might have a virus on your PC,
Check your sent items box and see if there are odd emails you haven't sent.

Also run a virus check on your PC. (even if there is no odd emails in sent items.)
 
Keegan, I have done that. I ran Spybot, AVG 2013 Internet security ( fully paid version) and Microsoft's Malicious tool. They all come up with nothing. It stops after a day or two and then started after some time again.
 
greenleader said:
Keegan, I have done that. I ran Spybot, AVG 2013 Internet security ( fully paid version) and Microsoft's Malicious tool. They all come up with nothing. It stops after a day or two and then started after some time again.
Click to expand...

not all viruses pick up, quite easy to fool with the encryption tools that stay one step ahead. Best is to use the bootable windows MSE to scan while virus is not active
 
Also download Malwarebytes and run a full scan. I haven't had this happen on my own PC, but have had to sort this out a number of times.

Assuming it is the same issue, what happens is this virus picks up your mail settings and sends from your account. Not necessarily from your PC though.

If the scan finds anything, remove the infections, reboot and then get your mail password changed. DO NOT change your password prior to scanning the system - it's just redundant.
 
Ok, I downloaded Malwarebytes and scan my PC. It did pick up some funny stuff. Then I changed my PW. Last night before shutting down, I ran a scan again and it found nothing. This morning on startup there were 135 mails ( Delivery status Fail). Now I don't know anymore.
 
Had similar experience couple of years back, only way I got rid of the problem
was to save my email Outlook Data File (.ost) into another directory, delete outlook.
Run spybot and Malwarebytes make sure to reboot and run again.
Then installed outlook and changed my password this appeared to do the trick.
 
Last edited:
greenleader said:
Ok, I downloaded Malwarebytes and scan my PC. It did pick up some funny stuff. Then I changed my PW. Last night before shutting down, I ran a scan again and it found nothing. This morning on startup there were 135 mails ( Delivery status Fail). Now I don't know anymore.
Click to expand...

Does it have a date on them? could have been sent before you removed the virus?
 
They were definitely seent after I scan the PC. Pc was scanned yesterday afternoon. They appeared this morning and again just now when I checked for mail.
 
They should start getting less and less since these could have been sent prior to changing your password.
 
I have been getting the same thing and my PC's are off when these are sent , did some research, seems the animals are using legitimate email addresses to spread their malware and when its refused by the other mail server it gets sent back to me or you in this case.
 
You are correct. On another forum, someoen mention that there is nothing you can do. You are protected and that is why it is sent back to you. Sometimes it stops for more than a month. Then it starts again. I will just make sure I am fully protected and take it from there. Thanks for all the replies. :)
 
Since this morning I have received over 150 of these messages. I then run Spybot, Malwarebytes and Windows Defender. None came up with anything. I rebooted the PC and then changed my e-mail PW and internet PW.
They still coming. How can I stop them?
 
You can't. They are not originating from anything you have any control over
 
Can you get your isp's abuse guys to check the log, they may be able to sort something out.
 
It could alo be a spammer is using your address as the "from" address and GMail is refusing acceptance as it is detected as spam so it bounces back to you as gmail thinks you were the legitimate sender.

Check the header info of the offending mail (probably as an attachment to the bounce mail) and see what IP address it is being sent from. Do this on a few messages to see if they are the same.

Then check your ip address on your router (The IP address assigned dynamically by your ISP when you connect to the internet) if it is the same as the spam message (which I doubt) then the problem is on your side.

If not the same (what I suspect) that will be the IP address of the spamming network and there is nothing much you can do about it.

You can also download http://spam-abuse.sourceforge.net/ this program that will analyse the header of the offending email and tell you where it originates.

I host email for a few corporate clients and see this from time to time.

At present there is a spammer advertising 'jobin-za.com" that is using the sender address the same as the recipient address.
Blocking about 80 a day for the past few days.
 
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noswal said:
Although perhaps inconvenient, you could change your email address versus the constant mails you get
Click to expand...

I have a domain with a catchall. Some of these bastsrds use random letter sequences from my domain as a source and ALL the bounces reach me.
 
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