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They should tell you why you are on the list if you query your domain name against them. My immediate reaction was a lack of reverse DNS which is something they complain about
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They should tell you why you are on the list if you query your domain name against them. My immediate reaction was a lack of reverse DNS which is something they complain about

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Well, I already called Barracuda and they're looking into it for me. <br />
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However, what does reverse DNS have to do with an inbound spam firewall? Nothing is being sent out through it.
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Well, I already called Barracuda and they're looking into it for me.

However, what does reverse DNS have to do with an inbound spam firewall? Nothing is being sent out through it.

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Hmm, I see. Okay, well we'll see what Barracuda says. Thanks.
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Hmm, I see. Okay, well we'll see what Barracuda says. Thanks.

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Hi, the title pretty much says it all. We have a Barracuda Spam Firewall 400 in INBOUND mode only. It is not passing any outbound mail. However somehow, as of this morning, it has ended up on the CBL, Spamhaus, and Barracuda Networks blacklists. Can someone explain to me how this is even possible?<br />
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Thanks.
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Hi, the title pretty much says it all. We have a Barracuda Spam Firewall 400 in INBOUND mode only. It is not passing any outbound mail. However somehow, as of this morning, it has ended up on the CBL, Spamhaus, and Barracuda Networks blacklists. Can someone explain to me how this is even possible?

Thanks.

Spam firewall in inbound only mode ends up on DNS blacklists, how?

Hardware-based firewalls provide more sophisticated protection for inbound and outbound traffic than the simple Windows software firewall or the basic NAT firewalls found in routers. These devices implement techniques such as stateful packet inspection, deep packet inspection, and content filtering; and may include built-in antivirus and anti-malware protection.