<\/p>\n
Recently, I’ve been getting many people wondering why, when running a discussion list in Bridge, that the From: header is rewritten from it’s original form, say:<\/p>\n
to something else completely<\/em> :<\/p>\n In my first example, the name of the subscriber ( In the rewritten From header, the phrase is now: While it’s true that discussion list software – including Dada Mail used<\/em> to maintain the From: header in its original form, it’s not something we can do anymore, without impacting deliverability in a major way. A big job of a mailing list manager (like Dada Mai) is successfully send out messages to the subscribers of the mailing list, right?<\/p>\n Here’s why this doesn’t work, anymore.<\/p>\n Sometime in 2014, Yahoo Changed their “DMARC” policy to only accept email messages that have a @yahoo.com email address in the From: header that also originated from a Yahoo server. Here’s Yahoo explaining it themselves.<\/a> This actually makes a ton of sense: ow, only messages that say they are from a yahoo.com address, and<\/em> sent through Yahoo’s mail system will be accepted for delivery by basically everyone that’s following the DMARC Policy rules (and that means Yahoo themselves, Gmail, Hotmail – all the big players).<\/p>\n This is a big win in trying to keep the problem of spoofing email addresses to send unsolicited email and other harmful payloads, but it had a dire consequence:<\/p>\nFrom: \"Subscriber Name\" <subscriber@their-domain.com><\/code><\/strong><\/p>\n
From: \"Subscriber Name subscriber@their-domain.com [List Name]\" <list.email@your-domain.com><\/code><\/strong><\/p>\n
Subscriber Name<\/code><\/strong>) occupies the phrase of the From: header, and the email address of the subscriber (
subscriber@their-domain.com<\/code><\/strong>) is where the address should be. Pretty straightforward.<\/p>\n
\"Subscriber Name subscriber@their-domain.com [List Name]\" <list.email@your-domain.com)><\/code><\/strong> – that is, the name of the subscriber (as before), then their own email address, and finally the name of the mailing list in brackets. The actual address portion of the From: header is the List Email address (
list.email@your-domain.com<\/code><\/strong>) – the address you send a message to, to start a thread.<\/p>\n
Why not just keep it like it was?<\/h2>\n
DMARC Policies<\/h2>\n