[ih] Early History of the Internet

[Jack Haverty]

Hi Barbara,

Lots of email configurations changed with the new year, part of efforts 
to fight spam.   That includes your email provider - yahoo:

https://en-global-stage.help.yahoo.com/kb/SLN24050.html

It appears from this announcement that yahoo will now reject email 
allegedly coming from yahoo but not arriving via one of yahoo's own 
servers.

Mail redistributors, like the internet-history list and many others, 
mangle messages as they redistribute them so that they appear to be spam 
when they get to their destinations.   So your email provider (yahoo) is 
now rejecting email from you (b_a_denny at yahoo.com) to the 
internet-history list because it's coming from isoc.org rather than from 
yahoo.

Your emails might be getting to some people on the list, depending on 
how their email server treats apparent spam.

For reasons I can't imagine, the DMARC mechanism allows mail services to 
specify a percentage of suspicious emails that should be just 
discarded.  100% trashes everything, 0% nothing, and it can be set 
anywhere in between.   So you may get *some* of your emails if the 
setting is, for example, 50%.   This confused me a lot recently until I 
figured out what was going on.

Bottom line: Email through mailing lists is not reliable and will be 
getting worse.

You should get this email because I sent it directly to your yahoo 
address.   You may or may not get the copy coming through 
internet-history at elists.isoc.org

Sorry, I don't know of any solution other than moving to some other 
email provider....that's what I did a few weeks ago.

Jack


On 1/10/24 18:29, Barbara Denny via Internet-history wrote:
>   
> In response  to Dave Crocker's post about tcp.  Can't seem to send email reliably to the list so keep removing extraneous info to see if  I can eventually send to the list.
>
> barbara
>      On Wednesday, January 10, 2024 at 10:38:19 AM PST, Barbara Denny<b_a_denny at yahoo.com>  wrote:
>   
>     TCP didn't work very well over SINCGARS which was a port of packet radio protocols to the SINCGARS combat net radio.  Our project was focused only on the network radio node issues (below transport). To do a demo we decided to use some app that used TCP.  There was retransmission at the link layerbut other things made that slow (perhaps channel acquisition? ).  Just to get through the demo I had to turn off all protocol support in the network for loss packets. That made me think cross-layer interactions were important but  it took many more years before work in that area.
> barbara
>
>
>        

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