19 May
2002
19 May
'02
6:51 a.m.
http://www.sxlist.com/techref/inet/smtpsend.htm has a
sample transcript if
you want to try individual tests by hand. BTW, there is one shortcoming of
the tests -- they check to see if the mail is rejected at the time of the
SMTP exchange; some people have argued that it's OK to accept the mail so
long as it's not delivered. Personally, I prefer not to have some spammer
wasting my resources and I prefer the mail to be rejected at the earliest
possible point.
Using the tests at the link above, I did have three other interesting results.
rset
250 OK
MAIL FROM:<spamtest@>
501 Syntax error in reverse-path
RCPT TO:<fakerelaytest@rr.com@>
503 Bad command sequence
data
503 Bad command sequence
rset
250 OK
MAIL FROM:<spamtest@zane.brouhaha.com>
RCPT TO:<rr.com!fakerelaytest>
250 <spamtest(a)zane.brouhaha.com>om>... Sender OK
550 <<rr.com!fakerelaytest>> ... Addressee unknown
data
503 No valid recipients preceded this
rset
250 OK
MAIL FROM:<spamtest@zane.brouhaha.com>
RCPT TO:<rr.com!fakerelaytest@250 <spamtest(a)zane.brouhaha.com>om>... Sender OK
zane.brouhaha.com>
550 <<rr.com!fakerelaytest(a)zane.brouhaha.com>> ... Addressee unknown
data
503 No valid recipients preceded this
It looks like TCPIP V5.1 on OpenVMS differs from the standard on how it
reacts to these as well.
Zane
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh(a)aracnet.com (primary) | OpenVMS Enthusiast |
| | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| PDP-10 Emulation and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |