Delivery problems are not all spam related

Not every delivery failure is due to poor reputation or spam. Sometimes ISPs just have problems on their mailservers and so mail doesn’t get through. It’s often hard for delivery experts (and their bosses and their customers and their clients) to watch email delays or rejections without being able to do anything about it.
Sometimes, though, there is nothing to do. The rejections are because something broke at the ISP and they have to sort through it. Just this week there’s been a lot of twitter traffic about problems at a major cable company. They are rate limiting senders with very good reputations. They have admitted there is a problem, but they don’t have a fix or an ETA. From what I’ve heard it they’re working with their hardware vendor to fix the problem.
Hardware breaks and backhoes eat fiber. Yes, ISPs should (and all of the large ones do) have backups and redundancies. But those backups and redundancies can’t always handle the firehose worth of mail coming to the ISPs. As a result, the ISPs start rejecting some percentage of mail from everyone. Yahoo even has a specific error message to distinguish between “we’re blocking just you” from “we’re shedding load and temp failing everyone.”

Related Posts

Return Path Changes certification standards

Return Path recently announced changes to their certification program. They will no longer be certifying 3rd party mailers.

Read More

State of the Industry

Over the last few weeks I’ve had a series of posts on the blog from various authors who are active in the email space.
I posted A very young industry commenting on the lack of experience among email marketers. I think that some of the conflict between ISPs and ESPs and receivers and marketers can be traced back to this lack of longevity and experience. Often there is only a single delivery expert at a company. These people often have delivery responsibilities dropped on them without any real training or warning. They have to rely on outside resources to figure out how to do their job and often that means leaning on ISPs for training.
JD Falk described how many at ISPs feel about this in his post With great wisdom…

Read More

Overusing ISP contacts

I’ve written frequently about personal contacts at ISPs and how the vast majority of delivery problems can be solved without picking up the “Bat Phone” and having someone at the ISP do something. Al touches on the same subject today, blogging about his recent experiences having to contact “Barry” multiple times for many different issues.
Al resolves

Read More