On Thursday, October 06, 2011 12:06:41 AM Miles Fidelman wrote: > Viktor Dukhovni wrote: > > On Wed, Oct 05, 2011 at 05:28:40PM -0400, Homer Wilson Smith wrote: > >> Running Postfix 2.8.2 > >> > >> When I telnet smtp0.lightlink.com 25, and type 'help', > >> > >> it says unknown command. > >> > >> Thanks in advance for pointers to RTFM. > >> > >> Homer Smith > >> Lightlink Internet > > > > For help with SMTP commands, see: > > http://tools.ietf.org/html/rfc5321 > > > > For help with Postfix: > > http://www.postfix.org/documentation.html > > > > The Postfix SMTP server does not implement the legacy Sendmail SMTP > > help interface, this feature is obsolete. > > Last time I looked (just now), RFC5321 stated: > > "SMTP servers SHOULD support HELP without arguments and MAY support it > with arguments." > > Not implemented, yes, and Postfix properly responds with a 502 response > code. Arguably not all that useful when implemented (e.g., as by > Sendmail). But neither "legacy" nor "obsolete" would seem to apply. > > Is this reply nitpicky, and/or pedantic? Probably.
5321 also says: "4.1.1.8. HELP (HELP) This command causes the server to send helpful information to the client. ..." It sounds like you got some helpful information, so one might even argue that telling you HELP is not implemented is an implementation of HELP. Scott K
