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Spam emails from one of my domains
How can I stop it?
Doug10




msg:388246
 7:02 pm on May 22, 2006 (gmt 0)

People are sending out spam emails in which the header email address spoofs the address one of my domains.

The server IP the spam is coming from seems to be in Israel.

Will my domain's email address end up blacklisted as a result of this spam?

Does anyone know how I can stop the spamming?

Thanks :)

 

txbakers




msg:388247
 2:12 am on May 23, 2006 (gmt 0)

it could be blacklisted.

if you have access to the email server or the scripts that you are using you can lock down which IP addresses are allowed to send mail using your domain.

But the problem is indeed insidious.

ronburk




msg:388248
 3:09 am on May 23, 2006 (gmt 0)

Ask the person in charge of your DNS server if they can add some SPF records for to discourage joe-jobbing.

That's about the best you can do right now.

Google for "sender policy framework" for more information.

pageoneresults




msg:388249
 3:30 am on May 23, 2006 (gmt 0)

People are sending out spam emails in which the header email address spoofs the address one of my domains.

If that is the case, it sounds like the server allows for SMTP relaying which is a no-no and has been for many years. You may want to run a DNS Report to check for any failures in your MX Records too. Send the DNS Report to your host and ask them to clean up the failures and to implement an SPF for you.

[dnsreport.com...]

debunked




msg:388250
 4:58 am on May 23, 2006 (gmt 0)

I have had this happen a number of times over the last year. SPammers use fake email addresses using out domain name, so everytime they send it to a bad address we get the return mail (catch-all) I would hate to turn off the catchall because I have recieved e-mails where the name was mispelled by a customer.

The worst thing is some spam blockers will blacklist our domain name because of this! That really sucks.

chrisranjana




msg:388251
 11:59 am on May 23, 2006 (gmt 0)

I agree IP addresses and mail headers can be spoofed

But is it possible completely to hide the SOURCE IP from which the spam had originated?

kwngian




msg:388252
 4:24 pm on May 23, 2006 (gmt 0)

SPammers use fake email addresses using out domain name

Actually they use your email address because it is a valid email address, thus in case the receiving mail server has the anti-spam feature that connects to your server to check if the address is valid before accepting the email, it will get through.

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