I have added some additional information to the SMTP Diagnostic test tool so that we can better troubleshoot Server Down alerts when customers are puzzled because they saw no outage.
I have added the full SMTP transaction transcripts to the SMTP Diag Alert emails. I also configured it to include the actual timeouts for “Timeout occurred due to inactivity” alerts which are what cause the SMTP Diag Failed emails.
Remember that just because we issue a SMTP failed does not mean that they were down or offline, just that they were unable to respond to our connection request within 15 seconds. They should have our testing networks whitelisted on their Firewalls and SMTP Defense mechanisms.
Product Development Engineer
Update 8/5/2010 11:55 CDT:We have made additional changes to the SMTP Monitoring code to try to alleviate the lingering false Down alerts. Please continue to give us feedback if you continue to experience them.