This discussion started out talking about XMITIP, which means running on
z/OS and using CSSMTP (or the older SMTP server). There is no user
authentication with the server. If you know how to create the headers
and how to get output to CSSMTP, you can create a sequential file and
use IEBGENER to write it to spool. You can put any mail-from ID you want
in it. One of our systems programmers sent a note to all of I.T. showing
people how to do this. Fortunately, this was very early and no one was
wanting to do it yet, so it was mostly ignored.
On 2/18/2021 4:45 PM, Tom Brennan wrote:
On 2/18/2021 2:20 PM, Jeremy Nicoll wrote:
It depends surely on the mail host? If I've done an authenticated
login to
a reputable mail provider, surely they'll make sure that what they send
out will accurately reflect who I am, not who my email client claims?
I think that's correct - it depends. I switched ISP's 2 weeks ago
(bad Spectrum cable to great Frontier fiber service *finally* in my
neighborhood) and had to rework that relay processing a bit. The old
ISP required specific FROM addresses. The new outgoing email server
(Godaddy) does not seem to check or change those addresses. It does
require a paid account with userid and password, and with that I
assume they can trace mail back to me if I decide to change careers
and get into the spam business :)
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