Just wanted to quickly update this issue: After double checking any scripts (thanks for feedback, send to a friend) that we have that use the mail() function, they are getting through to a hotmail inbox. So... 1) Email sent from our domain to hotmail.com IS delivered if sent via Outlook or Thunderbird 2) Email sent from our domain to hotmail.com IS delivered if sent via a script using the PHP5 mail() function. 3) Email sent from our domain to hotmail.com IS NOT delivered if sent via Squirrelmail Could Hotmail be acting upon some SM header or anything like that? ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ -- squirrelmail-users mailing list Posting Guidelines: http://www.squirrelmail.org/wiki/MailingListPostingGuidelines List Address: squirrelmail-users@xxxxxxxxxxxxxxxxxxxxx List Archives: http://news.gmane.org/thread.php?group=gmane.mail.squirrelmail.user List Archives: http://sourceforge.net/mailarchive/forum.php?forum_id=2995 List Info: https://lists.sourceforge.net/lists/listinfo/squirrelmail-users