SMTP hard bounce
Posted on 2006-11-07
I am running SBS/Exchange 2003, and am currently connected to a UPS with auto shutdown in the event of power failure. My question is: should the power fail for, say 2 days, what is the typical bounce policy?
For example, someone sends me an email. The power is out. Their SMTP retries sending the email multiple times until it succeeds or fails.
I've read it is typical that the other server will try several times for about four hours. After 5 days it quits trying altogether. Is this correct? What are your experiences with these types of bounces? Should I be paranoid about a short power outage (say 8 hours), or do the other SMTP servers usually do a good job of re-sending hard bounced emails. A generator is not in the budget. Thanks.