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Tag: bounces

Increase in bounces at Y!

I’ve been seeing reports over the last few days about an increase in bounces at Yahoo. Reliable people are telling me they’re seeing some increase in “invalid user” bounces. You may remember Yahoo announced an overhaul of their mail product back in December. Reliable sources tell me that this is more than just interface revamp. […]

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Thoughts on bounce handling

This week’s Wednesday question comes from D. What are your thoughts on bounce handling There’s no specific standard for bounce handling as we often talk about it. While a lot of people will mention the RFCs, the RFCs only say what to do with a single email that gets a 4xy or a 5xy during […]

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Mail problems at AOL

We cannot help endusers troubleshoot AOL connection problems. Please do not call. Please do not write. You need to talk to AOL. We are not AOL. We cannot help you.    Over the last few months there have been ongoing mail problems at AOL. These problems are all over the map and are resulting in […]

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Broken record…

The Return Path In the Know blog listed 4 reasons mailing those old addresses is a bad idea. Ashley, the author, is completely right and I endorse everything she said. (Although I’d really like to hear what happened to the customer that added back all those addresses. What was the effect on that campaign and […]

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AOL bounces and false positives

A number of people have been seeing an increase in AOL bounces over the last few days. Some of these are the new rejection 554/421 CON:B1 message. This is, basically, you’ve topped our thresholds, back off. The other one is a bit more interesting. The error message a lot of people are seeing is 554/421 […]

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Bounces, complaints and metrics

In the email delivery space there are a lot of numbers we talk about including bounce rates, complaint rates, acceptance rates and inbox delivery rates. These are all good numbers to tell us about a particular campaign or mailing list. Usually these metrics all track together. Low bounce rates and low complaint rates correlate with […]

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Data hygiene and bouncing zombies

There are a number of folks who tell me there can be no zombie addresses on their lists, they aggressively remove any address that bounces. The problem is that zombie addresses don’t bounce, at least not always. And even when ISPs say they have a policy to bounce email after a certain period of time […]

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Bounce handling simplified

I am a strong believer that bounce handling should be designed to remove addresses that have no human on the other end while not removing addresses that have a real recipient on the other end. Bounce handling should be designed to appropriately manage your subscriber base. Delivery problems are the consequence if you don’t do […]

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What’s the best ESP?

I often get clients and potential clients asking me to tell them what the absolute best ESP is. “You’re an expert in the field, which ESP will give me the best inbox delivery?” The thing is, there isn’t an answer to that question. ESPs have expertise in sending large amounts of mail.  All have staff […]

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Don’t think bounce handling is important?

James from Cloudmark has his own insight on spamtraps.

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