Dave M G wrote:
PHP List,
I run a few various social groups, and with each one I keep in contact
with members by emailing them short newsletters.
All my user information is stored in a MySQL database. I use PHP to get
the relevant contact information, and use the mail() command to send out
the emails one by one, so that each email is a little personalized.
I've used this system for many years now with no problems up until now.
What has changed, though, is that in recent years, anti-spam measures
have become so aggressive that more and more people who sign up to my
groups complain that they never receive the emails.
A lot of the times, after they alert me to the issue, I can educate them
a little about the anti-spam measures they most likely have on their
system, and walk them through how to make it so that my newsletters go
through.
However, that is clearly not enough.
To shorten a story that has already gone on a little long, it's come to
my attention that part of the reason that my emails may not be getting
through are because the headers are not sufficiently legitimate looking
enough to bypass some server side anti-spam measures. Things like
"Return-Path" are being set so that they look like they come from an
email address that begins with the username "nobody".
mail($email, $subject, $mailContent, $fromAddress);
You need to set the 5th parameter to change who it comes from (instead
of "nobody"). See php.net/mail for more info.
You can't change that parameter if safe-mode is on for the server or if
exim doesn't have the webserver user as a 'trusted-user' (I think only
exim is affected by this particular issue).
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