Some emails systems can block emails coming from Active such as confirmation emails and VIP or users invitations because they are sent from Active server. When this happens, emails may appear in the spam/junk mail box, or may be blocked from an email system automatically. If you suspect emails are being blocked by your spam filters, you will need to have Active added to your email system's whitelist. This can be done by IP Address or Domain Name.

See below the IP Addresses and Domain Names that you can add to your email system's whitelist to prevent Active emails to be automatically blocked by spam filters.

By IP Address:
74.217.187.131
74.217.187.31

By Domain Name:
awtx3.e.active.com
awntx3.email.active.com