Spam Resource: All Things Deliverability

Timely. Here is " Everything you need to know about BIMI and validated mark certificates, how they increase brand trust, and which companies have adopted them ," courtesy of World Trademark Review. This analysis, authored by Jeremy Speres, partner at Spoor & Fishe…

Thanks to William Gallagher from Apple Insider for letting us know that Apple has launched the ability to configure a custom email domain with iCloud Mail. It's explicitly noted as being in beta, and it sounds like the process is a bit buggy so far, but they'll get it …

I'm not 100% sure of the  exact  day that I first posted to this blog, but based on what I can find in my own notes and archives, I probably published my first post on August 26, 2001 . So, I'm going to call that the birthdate of Spam Resource, and that means that today…

Need a fake SMTP server for testing? Chadwan Pawar of PostBox Services suggests Mailhog . It's an open source SMTP server that captures all mail and gives you a visual dashboard showing you what was received. Much fancier than /dev/null (but that can come in handy sometime…

The question, “Why does Microsoft hate me?” is something I hear a lot lately. I’m not sure Microsoft actually hates any of you, but it’s clear that many senders are frustrated with how difficult it seems to be to be able to get mail delivered to Microsoft OLC (Hotmail/Outlook.c…

It's been a while since I've posted a BIMI status update, and things are changing! Things are standardizing! Things are getting good. So, let's get right to it...

Verifying email addresses through methods akin to what we now think of as confirmed opt-in (COI) or (DOI) isn't a new thing. Mailing list software Majordomo  added support for verifying new signups  way back in 1996. I don't remember exactly when it became common to va…

Are you looking for an open source sending MTA solution? For big senders, commercial MTA platforms like PowerMTA or MailerQ are usually the way to go. But for those of you looking for an alternative, ZoneMTA might be something for you to check out. Over on the Mailop list, le…

Microsoft's SNDS (Smart Network Data Service) portal is a free and valuable deliverability resource for senders, providing direct data and feedback regarding your sending reputation. It also allows you to configure JMRP (Junk Mail Reporting Program), the Microsoft version o…

The linux/unix tool  mb2md  does one thing and it does it well: It takes and "mbox" mailbox file and converts it into Maildir files. In " mbox " mailbox format, your entire mailbox is one file. Each message is delimited with a blank line and the next line st…

Are you running into this error message when sending to users at AT&T/SBCGlobal email domains ?  <(user)@sbcglobal.net>: host al-ip4-mx-vip2.prodigy.net [144.160.235.144] said: 550 5.7.1 Connections not accepted from servers without a valid sender domain.xxx123 Fix r…

Inbox monitoring and email validation tools vendor Validity has partnered with our friends behind the Spamhaus blocking lists to educate senders -- "formalizing a longstanding relationship in which Validity and Spamhaus have united under a singular vision to encourage bet…

It's time for an update! Here's my latest list of all of the consumer email domains hosted by AT&T, as best I can tell, as of August 2021.

You might have just noticed this: as of mid-July 2021, there's no longer any MX record for the us.army.mil email domain. There's no A record, either, so any attempts to mail users at this domain will now bounce.