The actual mail body I'm sending has From as the first header. I'm using a PHP function and the mail command, which just invokes the system sendmail: I could definitely be doing something else wrong,

#misc

I have been trying to investigate posts *to* (not from) groups.io that are bouncing. I was initially getting a HELO error but after changing some settings in postfix (mail agent running on Debian 10),

#misc

I've been trying to see if there's a way to do this, but so far, it doesn't seem that there is. The "Download" feature on the Member page allows for loading all members in a single text file, which is

#suggestion