Since 01/01/2009 we have been having problems receiving emails that are auto-generated from websites. For example if someone signs us for a service on one a specific website that is hosted by a anpther company an email is sent to employees showing them that someone has signed up for new service.
we have an exchange server 2003 running sp2 on a windows 2003 server sp2. all our emails go through postini for spam filtering. other emails come through fine.
for example i was talking to a technician responsible for this site his email address is email@example.com and i was able to receive and send emails to this address. but when our users try to receive emails from firstname.lastname@example.org they do not get the emails this address is the one that our agents get emails from when a user signs up for a service.
i have checked with postini and they do not show a record of emails coming through from this one email address which is email@example.com.
it appears other emails too that are generated automatically on websites are not coming through. I checked with some of these companies and they said they show the emails are have been delivered and they have no problem. i have added these email addresses to the allowed senders list on postini but they are still not coming through.
i will appreciate all your help