email blocked - blacklisted?

[aclivity]

I've logged on tonight to find 70 emails in my SPAM list with "mail delivery failed" or somesuch. Opening a few of them it shows that someone is emailing spam out using my domain name (aclivity dot co dot uk).

I've just received the following email:

Your message with subject : [Scanned by Extranet - SPAM] All
has been blocked because the IP address of your PC or Mail Server appears in the Spamhaus Real-time Block List ( The Spamhaus Project - SBL ). The message was sent from lemueljanacek@aclivity DOT co DOT uk to h@minsoc.fed.be

Which suggests I may be put on a mail blacklist?

Is my domain blacklisted, or the source IP address of the spammers mail?

Is there any way I can stop lemueljanacek and the countless other spoofers using my domain?

[MattS]

They will have blacklisted the source address of the spammer. Luckily most of em are not inteligent enough to spoof the ip.

Type your IP in here
The Spamhaus Project - SBL

and it should tell you you are clear.

[nordicdiver]

Originally Posted by aclivity

I've logged on tonight to find 70 emails in my SPAM list with "mail delivery failed" or somesuch. Opening a few of them it shows that someone is emailing spam out using my domain name (aclivity dot co dot uk).

Same thing happend to me, it started at 8 this morning, had my web adress in my profile here, removed it tonite, get about 10 mails in the hour now
"mail delivery failed" the spam filter does not wrk on them, maybe its a way to get around the spam filter for them ?..

[Titanic]

This started for me as well in last day or so.

Do you have a "catchall" address configured for your domain?

Turn that off should stop most of the rubbish reaching you. I don't think you can stop people doing this, it's more a case of keeping your email address / domain name out of the way of them finding it.

Don't include your a text version of your email address in your emails in a usable format, don't put it on your web site and don't use "mailto" on your web site. (I have seen a facility to encrypt your email address but it still displays fine on your web site).

What a pain though...

[Tiberius]

It's extreemly common. So common in fact that I don't know why the major mailer bother sending out these 'rejection' notices. It's pretty obvious usually that the spam doesn't come from the 'reply to' address.

Sometimes you even get a real person sending you an email titled something like 'unsubscribe' and asking you not to send them email. Look, how stupid can people get for christs sake!

It's a bit like someone sending out a mass mailing, and putting your address on the back as a 'return' address. If people dont take the time to validate it, then you'd probably get tons of junk mail back too.

If you really want to, then send back a snotty email to the administrator of the domain that sent you the rejection pointing out their stupidity...but then you're just adding traffic to the email system too.

Best you can do is as you've done, just make sure anything with a title like 'rejected email' goes straight into your spam.

[nordicdiver]

Originally Posted by Titanic

Do you have a "catchall" address configured for your domain?

Turn that off should stop most of the rubbish reaching you

Thanks for that, i'll get the "catchall" turned off, that should stop it.