Question : Sending e-mails for users using their e-mail address as reply e-mail (like LinkedIn)

I am working on a public community website whose members communicate via messages on the website.  When a user sends a message to another user, and e-mail is also generated with the message content.  This e-mail uses the e-mail address "[email protected]", not "communitysite.com" as the from address.  Is this a bad practice since the user's domain and sending IP are different?  Will this get filtered by SPAM blockers a lot?

Also, this is the method Linked In uses for e-mail sending.  How do they do it without any problems?

Answer : Sending e-mails for users using their e-mail address as reply e-mail (like LinkedIn)

Hi

I think your solution is to
set the From: field in the header to the correct address that relates to your mx record of the sending domain
set the replyto: field in the header to the address that you want the reply send to.

I even think you can cheat by giving the from field something like this: [email protected]m sendingaddress@sendingserverdomain.com. But I'm not realy sure bout that...

Try to add the sending server as an MX record to your dns config at your hosting side.

If you think that sender id or SPF is the problem at the spam filtering side you can add a txt record to your dns config that possesses the allowed sending mailservers for your domain
looks like this:
"v=spf1 mx ptr ip4:193.111.95.182 ptr:skynet.be ptr:rikke.combell.net mx:smtp.vanpuymbroeck.be a:rikke.combell.net include:skynet.be include:rikke.combell.net mx:skynet.be ~all"

the includes are the allowed sending domains...

Let me know that is works
Regards
Rikke