On Sat 24/Oct/2020 01:35:04 +0200 Jaroslaw Rafa via mailop wrote:
(In one of the places I worked previously, we tried to create our own poor
man's "sendfile" replacement, by plugging a mail filter into a MTA, which
removed from submitted messages attachments larger than a certain size,
stored them on a webserver with randomly generated links, and put these
links in outgoing message instead of removed attachments. The recipient
could download the original file by clicking on a link received in the
message. That's of course a very primitive approach, as the real
implementation would have to be in the MUA).
To let a MUA know that an URL points to content to be downloaded as part of the
message, one could use:
Content-type: message/external-body; access-type=URL; URL="scheme:whatever"
RFC 2017 provided for URL schemes "FTP", "ANON-FTP", "TFTP", "LOCAL-FILE", and
"MAIL-SERVER" (the same access-types defined by RFC 2046.)
Never saw a MUA supporting that. Are there any?
Best
Ale
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