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The Question is: Alpha 1000A VMS 7.1/UCX 4.2 Dear Dr. Wizard, sir: With respect to SMTP, we'd like to capture whatever information can be had about the mail delivery session (the mail receiver logs, for example, showing the actual domain name and/or IP address of the host that passed the mail) to assist with tracking spammers, etc. (since the headers in the mail message are often forged or insufficient). The UCX$SMTP_LOG_LEVEL logical name is described in the UCX Management manual, but only in a general way, and using it does not appear to provide the needed information. UCX$SMTP_RECV_TRACE and UCX$SMTP_RECV_DEBUG and UCX$SMTP_SYMB_TRACE are not described. Please describe each of these logical names, the values that can be assigned to each, and the resulting information that is written to various log files. Thank you. The Answer is :
UCX$SMTP_RECV_DEBUG is a Boolean, and applies to the reception of
SMTP messages. This logical name tells the receiver to log full
diagnostics. It performs a similar function to the symbiont's
UCX$SMTP_LOG_LEVEL 5.
UCX$SMTP_SYMB_TRACE is a Boolean, and applies to the SMTP symbiont.
This logical name tells the symbiont to log all messages received
from and transmitted to remote SMTP servers. It allows you to trace
the SMTP application layer protocol. Any unprintable and/or control
characters sent/received are printed as \n where 'n' is the hex value
of the character. For example, command lines and replies are terminated
with a <CR><LF> which would appear in the log like this:
send buf=MAIL FROM:<jones@acme.com>\d\a
recv buf=250 <jones@acme.com>... Sender OK\d\a
The "\d\a" is the <CR><LF>. CR is hex 'd' and LF is hex 'a'.
UCX$SMTP_RECV_TRACE is a Boolean, and applies to the reception of
SMTP messages. This logical name tells the receiver to log all
messages received from and transmitted to remote SMTP clients.
Unprintable characters are handled similarly to UCX$SMTP_SYMB_TRACE.
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