Happy #NoEmailDay – The case of the 500-mile email
Posted by jpluimers on 2017/07/07
Good reading on #NoEmailDay 2017: The case of the 500-mile email [WayBack] on how a sysadmin in the mid 1990s found the cause of not being able to send email further than roughly 500 miles.
The exact mile unit doesn’t matter as it was all approximation. Read the FAQ on the 500-mile email [WayBack]
–jeroen
via:
PS: some sendmail tricks from
- Force sendmail to deliver a message in sendmail’s mail queue [WayBack]
- Flush deferred messages in sendmail queue :: Stephan Paukner :: syslog [WayBack]
- Sendmail Configuration Settings Unmasked! [WayBack]
- cf/README – Tweaking Configuration Options [WayBack]
- Source: TUNING [WayBack]
mailq
sendmail -q -v
sendmail -OTimeout.hoststatus=0m -q -v
sendmail -OTimeout.ident=0 -OTimeout.hoststatus=0m -OTimeout.iconnect=5s -OTimeout.connect=1m -OTimeout.helo=1m -OTimeout.mail=1m -OTimeout.datainit=1m -q -v
sendmail -OTimeout.ident=0 -OTimeout.hoststatus=0m -OTimeout.iconnect=5s -OTimeout.connect=10s -OTimeout.helo=10s -OTimeout.mail=10s -OTimeout.datainit=1m -q -v
The Wiert Corner - irregular stream of stuff 
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