Our company recently enjoyed an Internet outage that lasted roughly 48 hours. Since we host our own email on SBS 2008 using Exchange 2007 (same server), we were unable to send and receive email throughout the outage.
I started wondering how many emails that customers tried to send us eventually timed out and produced return failures. This led me to several somewhat-related questions.
- How long does Exchange 2007 hold email in queue while trying to contact the remote server?
- Is there some place I can adjust these settings?
- As a best practice, roughly how long and how often should an email server try to send an email to a server that cannot be reached?