MS Exchange not sending email to external users
Posted on 2013-01-08
We have an Exchange Server in our site with Mailstore located locally for the users in this site. Then we have the primary exchange server in our other site with mailstore located there for their users. We have secured private WAN connection to have these two servers communicated. For going out (external emails - hotmail) we have Ironport at both sites to go out through our local internet gateway (different from secured private WAN connection)
Now I am having issue sending email to external users (e.g. hotmail)…
- The users in our site can send email to other site.
- The users in our site can receive email form other site and from external address (e.g. hotmail)
- The users in our other site can also receive emails from this site.
- However, if I send an email to external usres (e.g. hotmail), hotmail not receiving the email. However I am getting successfully delivered receipt.
What could be the issue?
Also does MS Exchange server keep its own routing table?
When there is a change in the newtork dos it take long time to re-calculate the route/path? if so why and what does it do?
Thanks for you help.