our ms Exchange server has been installed 6 months ago and has been working fine until some few days ago. Some users are able to send emails out and receive but the emails are received by the receiver after 2 hours some after 1 hour some after several minutes. Im new to ms exchange so i don't really know what to do.
Some users that rarely use emails are able to send and receive normally, but those users that use email every minute they are sending emails out but no longer can receive email coming in anymore.
I have seen that the mailbox quota set is only 2GB. Im assuming those actives users have reached their quotas because most of their quotas are 85% - 95% full.
What can i do ??