‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Wednesday, August 19, 2020 7:10 PM, Grant Taylor <gtay...@gentoo.tnetconsulting.net> wrote:
> Per protocol specification, SMTP is EXTREMELY robust. > > It will retry delivery, nominally once an hour, for up to five (or > seven) days. That's 120-168 delivery attempts. > > Further, SMTP implementations MUST (RFC sense of the word) deliver a > notification back to the sender if the implementation was unable to > delivery a message. this queue re-transmission, and failure notification, can be done with a small python script.
