Hello,
Exim seems to be a bit incompliant to RFC1869 (ESMTP):
I guess the line '250-Supported functions are:' is wrong:
popocate:/home/gvz > telnet mail smtp
Trying 193.98.9.7...
Connected to mail.hamburg.pop.de.
Escape character is '^]'.
220 mail.provi.de Exim ready at Fri, 13 Feb 1998 14:53:07 +0100
EHLO its.me.my.dear
250-mail.provi.de: Hello gvz at popocate.office.pop.de [195.222.230.42]
250-Supported functions are:
250 HELP
RFC1869 describes a successful ESMTP-reponse as follows:
> 4.3. Successful response
>
> If the server SMTP implements and is able to perform the EHLO
> command, it will return code 250. This indicates that both the
> server and client SMTP are in the initial state, that is, there is no
> transaction in progress and all state tables and buffers are cleared.
>
> Normally, this response will be a multiline reply. Each line of the
> response contains a keyword and, optionally, one or more parameters.
> The syntax for a positive response, using the ABNF notation of [2],
> is:
>
> ehlo-ok-rsp ::= "250" domain [ SP greeting ] CR LF
> / ( "250-" domain [ SP greeting ] CR LF
> *( "250-" ehlo-line CR LF )
> "250" SP ehlo-line CR LF )
>
> ; the usual HELO chit-chat
> greeting ::= 1*<any character other than CR or LF>
>
> ehlo-line ::= ehlo-keyword *( SP ehlo-param )
>
> ehlo-keyword ::= (ALPHA / DIGIT) *(ALPHA / DIGIT / "-")
>
> ; syntax and values depend on ehlo-keyword
> ehlo-param ::= 1*<any CHAR excluding SP and all
> control characters (US ASCII 0-31
> inclusive)>
In other words, "Supported" is given as an IANA-extension by
Exim to the client.
I just noticed this behaviour, as when we started using Exim
(1.63b with the option - thanks Philip :-) ) one customer was
not able to deliver mails to our site. When we removed the
ESMTP in the banner (by smtp_banner), he was happy again.
Now we'd probably like to switch back to the default ESMTP-
banner, and we'd like to ensure that our site is 100%-RFC-compliant.
What about dropping the "Supported functions are:" line?
Just another point:
The first response line should contain the domain followed by
SP and the greeting.
The ':' that is used by Exim in the first respone line right behind
the domain might be illegal, too.
Georg
--
*** Exim information can be found at
http://www.exim.org/ ***
