WordPress MU

Hi! I'm working on a website that has to be very user-friendly and emailing to the spam folder is not friendly. I've installed Cimy Swift SMTP to change de from-email in the emails sent by wordpress. I've tried with @hotmail.com, @gmail.com, @(any existing domain) but the emails are always sent to the hotmail spam folder. I've changed the from-name too but its still delivering to the spam folder.
Would you help me? Ideas?
Thanks!

You need to send the emails from the real domain. Since your mu install isn't gmail.com. hotmail.com or whatever, hotmail is noting that the box sending the emails doesn't normally send for those domains and, therefore is labeling the messages as spam.

You need to do a reverse DNS on your box so hotmail recognizes the email domain as legit.

Thanks for your replies!
Ok, so i must return de default. But the default is "domain.co.cc" and it is also mailed to the spam folder. That's why i started to change domains.
Ideas?

Try Andrea's solution. It would be helpful though if you gave the domain in question so we can see what is occurring.

Thanks!
But, how to I reverse the DNS?
the domain is http://elrincondelcas.co.cc/.
Thanks again!

http://forums.hostmysite.com/about4626.html

Thanks! i will solve this with my free hosting service provider.

Hi everyone,

yeah if you contact to hosting service it works, but if you make very easy to send emails very well make this changes

I found the way that wordpress send emails to friends, using the function http://codex.wordpress.org/WPMU_Functions/wpmu_welcome_notification

but for this use
///////////////////////////////////////////////////////////
wp_mail($user_email, $subject, $message, $message_headers);
//////////////////////////////////////////////////////////7
in wordpress-mu/wp-includes/wp-functions.php

so i have this problem when i have to send lists of emails via console linux because this go to spam folders in yahoo, and hotmail, so i create a sistem in php to send this emails.

Is very easy

change
wp_mail($user_email, $subject, $message, $message_headers);
for

mail($user_email, $subject, $message, $message_headers);

that this change your emails sed to inbox
This works because php not show the original sender in litle words

so prove it