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I used to know this...

Can someone please give me a quick refresh on why a Yahoo email address such as "user@..." becomes "user@..." on posted messages? Thanks.

Drew

Drew,

Can someone please give me a quick refresh on why a Yahoo email
address such as "user@..." becomes "user@..." on
posted messages?

It's called DMARC.

It is a protocol whereby an email sending service can tell email receiving service to reject any message that doesn't come directly from the sending servers and is not an exact copy of one was sent from them.

Basically it is considered to be an anti-spoofing technology, but it has the side-effect of causing messages that go by way of mailing lists (such as Yahoo Groups or Groups.io or Mailman, or ...) to be rejected, or sent to spam.

Yahoo and a few other email services have that turned on. To help ensure that messages from the afflicted members (yes, I meant it that way) are actually delivered to other group members Groups.io mangles the From address, so that the message is now From groups.io, but still contains the sender's email address so that you can untangle it if you wish.

Yahoo Groups' response to the same problem is to mangle everyone's address, and much more grossly.


Shal

The other effect which is driving me nuts is that when I try to respond to a message on a YahooGroup, the person’s name is attached to the list name. This may just be Apple Mail but when Carrie posts a subject, the response is addressed to

"Carolyn Kinney carriek@... [TVC-CHIP]" <TVC-CHIP@...>

Even when the message is to the list not to Carrie individually.

When a bunch of people are involved in the discussion, people think Carrie sent all the messages. The address will stay the same for the whole thread unless I delete it and put in only the name of the list. But every time I want to respond to the list this address will autofill and it’s very hard to get rid of — delete and hit return and it come back. I have to clean my list of previous recipients on a regular basis.

Since I manage our community lists, the first time this started happening I was up half the night trying to find out why. It was confusing a hot issue and made it very unclear who was saying what and who was receiving messages individually and who from the list.

If you look at the address on this message it includes “calendar”. That must have been saved from a message on calendars?

Sharon

I have no idea what you are talking about. This has nothing to do with Yahoo.? One of my people send a message to the group and his email is modified like that. If I can stop it please let me know.
That being said, I am I think signed up on this group as a daily summary and I am getting all the messages one by one all day long.

David,

I have no idea what you are talking about. This has nothing to do with
Yahoo.

Oh, but it does. It has everything to do with Yahoo Mail, and their decision to break almost every mailing list on the planet. AOL and a few others followed suit.

One of my people send a message to the group and his email is
modified like that.

That member must be using one of the accursed email services.

If I can stop it please let me know.

You can't, but the member could chose a less benighted email service.

That being said, I am I think signed up on this group as a daily
summary and I am getting all the messages one by one all day long.

Putting on my GMF owner hat, I can confirm that you have two subscriptions to this group, at two different email addresses. One that joined Jan 22nd and is set to Summary, and a second that joined early this am my time (10:43am UTC), and is set to Individual messages.

Shal
GMF Owner