# Domains used by our MX and relays. # These have to be allowed OK in case our primary MX is unavailable. posluns.com OK # Domains that are commonly spoofed or forged: aol.com OK att.net OK earthlink.net OK excite.com OK hotmail.com OK juno.com OK karamail.com OK lycos.com OK mac.com OK mail.com OK msn.com OK netscape.com OK netscape.net OK optonline.com OK optonline.net OK rocketmail.com OK untd.com OK yahoo.ca OK yahoo.com OK