Michael, I was working with an very old DataGeneral mainframe using X.25 mail when RFC-822 was released for comments (RFC=request for comments). My office evaluated it and found it to be much more reliable than our X.25 mail and much faster in delivery.
By 1990, we have stopped using X.25 mail and SMTP was being used on a Pyramid Unix box and we have a new DataGeneral for our database use. My point is that if you go back in the early 80's and look at the original comments on RFC-822, you will find an X.25 mailbox [EMAIL PROTECTED] Yes, SMTP is not 100% reliable, in fact while I type this my network operations center is trying to find out why one of our operating locations is not receiving our E-Mail and why we are not receiving theirs even though we are both getting system delivery receipts. The problem has been going on since Friday but the users weren't aware of a problem. The fact is that SMPT or any Internet, TCP-IP or other protocol will have delivery, latency problems and just will flat not work at times. However, point-to-point links have a better chance of connectivity than multi-layer and multi-hop systems. If the Internet could have an "administrator" right at the console of every mail server, you would have a system with few or very hold ups in delivery...much like a point-to-point system. Its the operator that makes the system work...we call them amateur radio operators. I R 1 73, Walt/K5YFW -----Original Message----- From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED] Sent: Monday, September 18, 2006 1:16 PM To: digitalradio@yahoogroups.com Subject: RE: [digitalradio] Re: The Internet is Unreliable for Amateur RadioService Emergency Communications Maybe you should go read RFC 822 -- SMTP, which is the mail transport used on the internet, is NOT reliable, never was, never will be guaranteed delivery. Maybe in the future there will be yet another protocol for sending email that IS reliable and guaranteed delivery, but SMTP isn't it! -----Original Message----- From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Thursday, September 14, 2006 1:54 PM To: digitalradio@yahoogroups.com Subject: RE: [digitalradio] Re: The Internet is Unreliable for Amateur RadioService Emergency Communications > I have a friend who lives 142 miles (as the crow flies) southeast of me. > He can send me an E-Mail at say 10:00 local asking me to get on 40M > for a QSO at 15:00. Sometimes I don't get the E-Mail until well after > the Skd time...and sometimes not at all because his E-Mail service > bounces his E-Mail back because it says it won't send E-Mail to my E-Mail server. > > I call this unreliable. > > However, we can QSO on 75/40M from dawn to dusk and into the night. I > call that reliable. My HF radio antenna is low and in the trees. I can't talk across the country reliable on 75 M in the evening... Does that make HF broken? No - my equipment is not configured properly. Same for Email - if it takes more then a few minutes for the Email message to get from one station to another, then you're using the equivalent of a dipole on the ground. The "system" is not tuned for optimal operation. For casual use it's fine. For time critical use it's broken. It's the pieces that need to be fixed - not the overall system. Bill - WA7NWP Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/digitalradio/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
