如何在托管2个域的服务器上的外发PHP邮件上指定域？

Question

My server is configured with example.net as the hostname, but both example.net and domain.com A records point to the IP.

If you visit domain.com one of the pages sends an email out. I've tried this

mail('my@email.com',
'an image (#' . $id . ') has been reported',
'an image (#' . $id . ') has been reported',
'From: reports@domain.com' . "\r\n" . 'Reply-To: reports@domain.com' . "\r\n" .
'Return-Path: reports@domain.com');

When sending it to my Live/Hotmail address, it gets sent to the junk folder, and this is what message source shows

Authentication-Results: hotmail.com;
spf=none (sender IP is *.*.*.*) smtp.mailfrom=www-data@example.net;
dkim=none header.d=domain.com;
x-hmca=none header.id=reports@domain.com

From: reports@domain.com
Reply-To: reports@domain.com
Return-Path: www-data@example.net

Answer 1

If you're on a *nix server, using sendmail, then you can specify the sender used in the SMTP transmission by passing extra arguments to sendmail via the fifth parameter, eg:

mail('my@email.com',
'an image (#' . $id . ') has been reported',
'an image (#' . $id . ') has been reported',
'From: reports@domain.com' . "\r\n" . 'Reply-To: reports@domain.com' . "\r\n" .
'Return-Path: reports@domain.com',
'-freports@domain.com');