I'm combining my replies into one message to avoid spamming the mailing list.

Thank you all for intriguing responses.  :-)



On 7/5/19 3:28 PM, Dennis Boone via cctalk wrote:
 · FidoNet (FTN)

As long as we're being silly, this isn't really one protocol. There are a number of different ones, which can probably mostly be characterized as thin wrappers (FTS-0001, Yoohoo(/2u2), etc) around common file transfer protocols (zmodem, xmodem, and others).

Fair enough.



On 7/5/19 3:40 PM, Bill Gunshannon via cctalk wrote:
Well, if the idea is to get that silly, UUCP isn't one protocol either. And, technically. it isn't for moving email at all. Like FTP it is for moving files. It is what happens after the files have been moved that makes email, email.

Also fair enough.



On 7/5/19 4:06 PM, Peter Coghlan via cctalk wrote:
It's not a holiday in most of the world, including where I am, however...

;-)

BITNET isn't really a protocol. Perhaps you mean NJE which was the protocol used to implement the BITNET and related networks?

Uh … Ya!  I meant NJE.  ;-)

Although I think BSMTP (batch SMTP) was usually used to transfer mail over NJE networks.

$ReadingList++

(Speaking of which, anyone want to join an NJE network?)

Where can I find out more?

I have no idea what this one is. "Mail spool" could mean mean all sorts of different things on all sorts of different systems.

I was thinking an MUA accessing files in the mail spool (traditionally /var/spool/mail as far as I know) and not using an intermediate protocol (POP3 / IMAP / etc.).

Another one was the coloured book protocol used between academic establishments over X.25 networks in the UK and Ireland and probably elsewhere, Grey maybe, I forget which, probably for the best.

$ReadingList++

Then there is DECnet and/or Mail-11…

I don't know how I missed that.

…depending on what level of protocol you are talking about.

Valid question.  I don't have a distinction at the moment.

And phonenet which I often heard about but never saw.

I think I have a term collision in my head. I /think/ I'm thinking of Home Phoneline Networking Alliance.

I worked for an email provider for about 15 years. We used just about every protocol you can think of to transfer mail to customers, including those already listed plus Kermit / X/Y/Zmodem / Blast (a file transfer package few seem to have heard of) wrapped up in protocols we came up with ourselves which often also used stuff like Zip to compress the data for transmission. We used them to feed mail into all sorts of email systems long since come and gone, for example CCmail, Microsoft Mail and Pegasus Mail, to name but three from the 1990s.

Intriguing.

I think that CCmail / Microsoft Mail / Pegasus Mail were email technologies that used shared access to a common "Post Office" (directory structure).



On 7/5/19 5:27 PM, Peter Corlett via cctalk wrote:
I use rsync (over ssh) for transferring between a couple of my mail servers.

Hum.

I'm curious to know more. Are you transferring / synchronizing mail boxes? Or are you using rsync as an intermediate transport between and outgoing spool on one system and an incoming spool on another system?



On 7/5/19 5:40 PM, Jason T via cctalk wrote:
I have vague memories of batch email transfer utilities from the BBS world. They were readers and/or transfer agents, but I imagine some had their own transfer protocols and file formats. The only two I can recall at the moment were QWK and Blue Wave. This probably has some tie-in to FIDOnet as well.

I've heard of QWK and "BinkP" is coming to mind for some reason.



On 7/6/19 12:57 PM, Paul Koning via cctalk wrote:
There's the MAIL-11 protocol (end to end, no MTAs) and the DECmail protocol which may be some OSI-like thing, I'm not sure anymore.

I guess I don't know enough about MAIL-11 to understand why you say end-to-end / no MTA.

Was DECmail the OSI X.400 email implementation that DEC produced (I think) in the '90s?

For real strangeness there is the PLATO mail protocol, which involves writing the mail into files, which are then extracted from PLATO into the OS file system by a periodic batch job, then sent to another system via file transfer (FTP or a predecessor), then pushed into the PLATO file system, then picked up by a mail agent at that end. Ugh.

$ReadingList++



On 7/6/19 1:33 PM, Chuck Guzis via cctalk wrote:
Those who quibble about the ftp being a separate entity from mail protocol would do well to look at RFC 524 from 1973. There, the MAIL command is implemented within the ftp structure (that is, it is an ftp command).

Yep.



--
Grant. . . .
unix || die

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