Hi,
I'm using PEAR's Mail class to send mail to a list of ~380 people each week. Problem is, I'm getting about 150 e-mails back with 'unroutable domain "hotmail.com"' errors. I'm currently sending 150 e-mails an hour, and the failings are spread across the different sendings. The system appears to work for sending e-mail to smaller groups (with no failures, except standard address not found bounces).
Any ideas?
Thanks,
Dom