On 13:50 Sat 03 Nov , Dan Farrell wrote: > On Sat, 3 Nov 2007 13:22:18 -0500 > forgottenwizard <[EMAIL PROTECTED]> wrote: > > > I'm not sure what the purpose of telneting my own system it, either. > > Would I be looking for an open port? > > Telnet clients are useful debugging tools. You can connect to a > service (in this case SMTP, on port 25) and then manually implement the > service's protocol for troubleshooting purposes. > > For Example, in this case my message couldn't be sent because it > (evidently) contained an invalid header, but the same commands would > work if connected to a different server. I can see the error message; > if I was maintaining this server, I could perhaps adjust my > proxyd-filter.pl file, or suggest that my users adjust their mail > headers. > ==================================================================== > Example SMTP session, implemented through telnet. > ------------------------------------------------------ > [EMAIL PROTECTED] ~ $ telnet mx4.hushmail.com 25 > Trying 65.39.178.137... > Connected to mx4.hushmail.com. > Escape character is '^]'. > 220 smtp6.hushmail.com ESMTP Postfix > HELO spore.ath.cx > 250 smtp6.hushmail.com > MAIL FROM: [EMAIL PROTECTED] > 250 2.1.0 Ok > RCPT TO: [EMAIL PROTECTED] > 250 2.1.5 Ok > DATAHello forgottenwizard, > 502 5.5.2 Error: command not recognized > DATA > 354 End data with <CR><LF>.<CR><LF> > Hello forgottenwizard, > This email is meant as an example of the usefulness of a telnet client > as a general purpose debugging tool, applicable to all sorts of > plain-text communication protocols. In this case, I spoke SMTP with > the mail server. You could use the same method to speak to an HTML > server, or one of many other protocols as well. > Sincerely, > Dan Farrell <[EMAIL PROTECTED]>
Alright, I've finally gotten around to messing with telnet to try and look at this problem, but I seem to have lost the other email on what I need to do. If you could resend that, and give me some additional info on how to check through all the possible problems, I'd appreciate it. -- [EMAIL PROTECTED] mailing list
