Yahoo has updated their FAQ and listed out a number of factors they use to determine if a mail message is spam. IP Address Reputation URL Reputation Domain Reputation Sender Reputation DomainKeys Identified Mail (DKIM) signatures DMARC authentication Autonomous System Number (ASN) reputation Autonomous System Number (ASN) is a globally unique number that is assigned to a group of IP networks...
Sitting in my drafts folder is a rant I wrote during one of the “email is dead” discussions. I think there’s a core of usefulness in my rant. The discussion was about how many click bait articles claim email is dead because people under 20 don’t have email accounts, or if they don’t, then they don’t check them. Almost everything online is tied to an email...
As of April 15th, Clearwire will no longer support their CLEAR Email/Clearwire Email services which include @clear.net and @clearwire.net mail domains. They were acquired by Sprint and these domains will bounce after April 15th 2015.
Many thanks to Anthony Chiulli from Salesforce for the tip.
Most delivery problems to US ISPs boil down to sending mail to people who don’t want it or expect it. Sure, we do technical audits and find issues with how companies are sending mail. But all the technical correctness in the world isn’t going to make up for sending mail users complain about or don’t interact with. Recently we were working with a client who was having some...
We started the month with some conversations about best practices, both generally looking at the sort of best practices people follow (or don’t) as well as some specific practices we wanted to look at in more depth. Three for this month: Be gracious with opt-out requests. Email marketing is hard. Even when it’s successful, response rates can be very low. It is surely frustrating to hear from...
Terry Zink posted two informative blog posts recently, the first being the change to unauthenticated mail sent over IPv6 to EOP and the second post about EOP (Office365 and Exchange Hosting) and Outlook.com/Hotmail infrastructure converging. Exchange Online Protection (EOP) is the filtering system in place for Office 365 and hosted Exchange customers. Outlook.com/Hotmail utilized its own mail...
Just yesterday a group of delivery folks were discussing email verification services over IRC. We were talking about the pros and cons, when we’d suggest using them, when we wouldn’t, which ones we’ve worked with and what our experiences have been. I’ve been contemplating writing up some of my thoughts about verification services but it’s a post I wanted to spend...
The Conservative Party is one of the largest political parties in the UK. They’re center-right politically (by European standards), nationalist and pro-business. You’ll often see them called the Tory party or Tories – a pejorative nickname they acquired 350 years ago. While they’re part of the ruling coalition today, there’s a general election coming up in the next...
Earlier this month, Sendgrid reported that a customer account was compromised and used for phishing. At the time Sendgrid thought that it was only a single compromise. However, they did undertake a full investigation to make sure that their systems were secure. Today they released more information about the compromise. It wasn’t simply a customer account, a Sendgrid employee’s...
Terry Zink at Microsoft posted earlier this week that Office365/Exchange Online Protection will have a significant change this week. Office365 uses Exchange Online Protection (EOP) for spam filtering and email protection. One of the requirements to send to EOP over IPv6 is to have the email authenticated with either SPF or DKIM. If the mail sent to Office365/EOP over IPv6 is not authenticated...
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