I talked on Monday about the SPF rule of ten and how it made it difficult for companies to use multiple services that send email on their behalf. Today I’m going to look at how to fix things, by shrinking bloated SPF records. This is mostly aimed at those services who send email on their customers behalf and ask their customers to include an SPF record as that’s the biggest pain...
Some mechanisms and modifiers (collectively, “terms”) cause DNS queries at the time of evaluation, and some do not. The following terms cause DNS queries: the “include”, “a”, “mx”, “ptr”, and “exists” mechanisms, and the “redirect” modifier. SPF implementations MUST limit the total number of those terms to 10...
“All mail clients suck. This one just sucks less.” Mutt is a commandline mail client that’s been in use and been actively developed for about two decades. It’s considered by many to be the most powerful mail client available, particularly for handling large volumes of email. It’s weaknesses include poor rich text handling and desktop integration for attachment...
If you’re sending email from any address beginning with a 65 – in 65.0.0.0/8 – it’s possible you’ll see some delivery problems.
Something appears to be broken with dnssec signatures for the reverse DNS zone, leading queries for reverse DNS to fail for anyone using a dnssec aware DNS resolver (which is almost everyone).
Ray Tomlinson has passed away. Mainstream obituaries are going to focus on his being “the creator of email” or “the sender of the first email” or “the inventor of the @ sign in email addresses“. All of which are true. He did send the first (networked) email. He did use the (otherwise mostly unused on TENEX) @ sign to separate user and host. But he did a lot of...
Later today we’ll be switching from an Extended Validation (“green bar”) SSL certificate to a Domain Validation certificate. This isn’t exactly a planned change but I’m waiting for responses from Comodo before I go into it too much. I’ll share some more details next week.
This is what my mail client tells me about the latest mail Twitter sent me: Criticism of Twitter’s copywriters? Not exactly, no. Mail.app is looking for some textual content near the top of the mail to display to me as preview text. It can’t find any in this mail, so it’s telling me the message has no content. Looking at the mail it’s a standard multipart mime message...
Germany’s highest court has ruled that Facebook’s practice of harvesting email addresses from their users contact lists in order to send invitations to them constitutes “advertising harassment” and violates German law on data protection and unfair trade practices. This in response to a suit filed by the Federation of German Consumer Organisations (VZBV) What the judgment...
It’s that time of the year – marketers send more email than usual, recipients unsubscribe from their lists. Clicking on the unsubscription link in the email I just received took me to an unsubscription landing page. The box for my email address was prepopulated based on the cookie in the unsubscription link, the default setting is to unsubscribe me from all mail from the sender and...
When you click on a link in your mail, where does it go? Are you sure? HTTP Redirects In most bulk mail sent the links in the mail aren’t the same as the page the recipients browser ends up at when they click on it. Instead, the link in the mail goes to a “click tracker” run by the ESP that records that that recipient clicked on this link in this email, then redirects the...
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