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Problems at Cox: Resolved

People mailing to Cox in the wee hours of this morning may have received a rejection message citing the Invaluement DNSBL.
554 IMP a.b.c.d blocked.  IPBL100 – Refer to Error Codes section at http://postmaster.cox.net for more information.
I spoke with one of the folks at Cox and they said there was an error in the implementation causing non-listed IPs to be rejected erroneously between about 4am to 8am (Eastern) this morning.  The problem has been resolved as of 8am, and all traffic is flowing  normally.  The also stated that attempts to resend any blocked messages will succeed. They do apologize for any problems this may have caused.
For those of you with aggressive bounce handling, removing addresses after a single 550 bounce, you will also want to re-enable any cox.net subscribers that bounced off during this configuration problem.

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They are all Barry. Listen to Barry

Al has a guest post up from an ISP rep (now universally referred to as Barry) about senders contacting ISPs. It lists things senders do that Barry Don’t Like.
Listen to Barry.
There are also comments from various other Barrys in the comments. Those are worth reading, too.

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Senders need to take responsibility

Having just returned home from another conference, my head is full of new ideas, new thoughts and new projects. I enjoy seeing old friends, making new contacts and sharing ideas. One thing I don’t enjoy, though, is listening to senders and marketers complaining about how hard it is to be a sender because the ISPs will not tell them what standards they need to meet.
If the ISPs would just tell us what they want us to do, we’ll do it.

The ISPs have told senders what they want them to do. They want senders to stop sending mail that their users don’t want. It is a very simple statement.
Stop sending spam.

For many senders, however, it’s not enough. “Tell us exactly what we need to do to stop sending spam. What complaint rates must we be under? What bounce rates do we have to be under? How do you want us to do this?” By this point in the conversation the ISP person is mentally rolling their eyes and looking for a way to escape the conversation.
The ISPs don’t want to tell senders how to behave, they want senders to start behaving. Stop sending spam should be all they need to tell senders.
Senders who ask for ISPs to tell them how to stop sending mail recipients think is spam are looking for specific thresholds they can stay under. They’re not really interested in actually sending wanted mail, they’re interested in sending good-enough mail, where good-enough mail is simply mail that gets to the inbox.
Want to know why ISPs don’t think much of many senders? Because the senders are not visibly taking any stand against abuse. I know there are a lot of senders out there who stop a lot of spam from ever leaving their systems, but there’s also a lot of unwanted mail that goes out, too. Some of that mail is even spam by any definition of the word. All the ISPs can see is the spam that gets through, and then they hear just tell us what to do and we’ll do it. From an ISP perspective, this means the senders only care about the thresholds and getting in under the ISPs’ radars.
Senders need to take more responsibility for the mail that goes out over their networks.
What do I mean by this? I mean senders need to stop waiting for the ISPs to define good practices. Senders need to implement standards and good practices just because they’re good practices, not because the ISPs are dictating the practices. Senders need to stop customers from doing bad things, and dump them if they won’t stop. Senders need to stop relying on ISPs for specific answers to why mail is being blocked. Senders need to take responsibility for the mail going across their networks.
It’s time for senders to grow up and stop relying on others for guidance. They shouldn’t implement good practices just because the ISPs tell them to, but instead should implement good practices because they are good practices.

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