Hi all, In our company, we have an internal mail server and an external mail server in our DMZ area. External mail server forwards all the e-mails through the internal mail server and it does the distribution to mailboxes. Internal mail server also delivers the e-mails sent to Internet. But sometimes, IMC service of the Internal Server stops because of some reasons (generally insufficient disk space). So, sent e-mails pile up in the queue. Is there any tool that gives warning when one of the Exchange services stop or the number of emails increase in the queue, or reports any problem occured immediately? Thanks, Regards, Meral