Hi - sorry I havent replied sooner...
Anway ill try and explain a little more clear: when you recieve an email with whatever you use for email it will usually have a name and email address such as:
Mr Thingy <email@example.com
This is what most people understand to be where the email has come from, which in most cases especially when you send emails between friends is the truth. But in a lot of spam and junk emails this isn't the address the email has come from, and is simply a return email for when you reply, or just a 'made up' email. You can easily edit that line which reads Mr Thingy <firstname.lastname@example.org
> to be anything you want with some basic php mail functions.
Anyway when you send an email from phpBB it comes from the email that you host has as its defualt setting. Example my emails come from email@example.com
on my host by default. Although this 'true email' is okay and doesnt affect most people, some people might either want to change this or if they are like my host they might not be able to send emails from the user nobody (firstname.lastname@example.org
) as my host has disabled of sending emails from this address as it someone was spamming from it, and as everyones emails were coming from this same email they coudlnt figure out who it was. So now on my host you have to define the email you want emails to be sent from.
Im using gmail for my emails - if I goto more options when in the email and then click show original it shows you a lot of details that are usually hidden and most people are unaware of. Most other email providers have somethign similar.
If you send an email from your site before installing this hack and then do the same after you have added the hack and compare the results of all the true details you will see the differences.