On 2020-12-18 05:50:44 (+0800), Grant Taylor via mailop wrote:
On 12/17/20 2:21 PM, John Levine via mailop wrote:
But now, in 2020, is there a point to secondary servers?
I believe you answered your own question. It's just that the nuances
are different now than they were 10 / 20 / 30 years ago.
Mail servers are online all the time,
Are they?
Can you /guarantee/ that your mail servers are accessible between
three (~9 hours a year) and four nines (~1 hour a year)?
What about when an oops happens and the server(s) have the wrong
configuration. E.g. Gmail returning 500 errors b/c of an internal
problem. Or updates. Or Backhoe Bob doing his best to prevent
packets from reaching your server(s). Or. Or. Or.
Does it matter?
In 2020, the sender will queue and retry. If the sender doesn't queue
and retry ... it probably wasn't all that important a message in the
first place?
Philip
--
Philip Paeps
Senior Reality Engineer
Alternative Enterprises
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