On Sat, Apr 19, 2014 at 11:10:13PM +0200, Axel Luttgens wrote:
> >> Can it be avoided?
> >
> > No.
>
> Well... This is perhaps the opportunity for a feature request?
Unlikely to happen in this case. Far more important than the user
understanding the message is that the postmaster understands the
context in which the message happens.
> Such messages are liable to be shown in a MUA user interface.
Some user interfaces attempt to base the user interface on the DSN
code, you should prepend the closest RFC 3463 DSN code to your
error message.
http://tools.ietf.org/html/rfc3463#section-3.3
> But end-users often tend not to read such messages, especially
> when they are a bit complicated, too technical.
>
> Would there be an easy way, I mean without rewriting a bunch of
> code, to avoid such frightening tech pieces ("<END-OF-MESSAGE>",
> "End-of-data"...)?
As "frightening" as they may be, they concisely communicate the
SMTP context in which the message was rejected. Which enables the
postmaster to respond to problem reports.
If you can suggest a concise less scary version of "END-OF-MESSAGE"
or "End-of-data" as cosmetic change that simply replaces existing
names of SMTP states with friendlier unambiguous names, please do.
src/smtpd/smtpd.h:
#define SMTPD_AFTER_CONNECT "CONNECT"
#define SMTPD_AFTER_DATA "DATA content"
#define SMTPD_AFTER_DOT "END-OF-MESSAGE"
#define SMTPD_AFTER_CONNECT "CONNECT"
#define SMTPD_AFTER_DATA "DATA content"
#define SMTPD_AFTER_DOT "END-OF-MESSAGE"
/*
* Other stages. These are sometimes used to change the way information is
* logged or what information will be available for access control.
*/
#define SMTPD_CMD_HELO "HELO"
#define SMTPD_CMD_EHLO "EHLO"
#define SMTPD_CMD_STARTTLS "STARTTLS"
#define SMTPD_CMD_AUTH "AUTH"
#define SMTPD_CMD_MAIL "MAIL"
#define SMTPD_CMD_RCPT "RCPT"
#define SMTPD_CMD_DATA "DATA"
#define SMTPD_CMD_EOD SMTPD_AFTER_DOT /* XXX Was: END-OF-DATA */
#define SMTPD_CMD_RSET "RSET"
#define SMTPD_CMD_NOOP "NOOP"
#define SMTPD_CMD_VRFY "VRFY"
#define SMTPD_CMD_ETRN "ETRN"
#define SMTPD_CMD_QUIT "QUIT"
#define SMTPD_CMD_XCLIENT "XCLIENT"
#define SMTPD_CMD_XFORWARD "XFORWARD"
#define SMTPD_CMD_UNKNOWN "UNKNOWN"
src/smtpd/smtpd_dsn_fix.h:
/*
* Internal interface.
*/
#define SMTPD_NAME_CLIENT "Client host"
#define SMTPD_NAME_REV_CLIENT "Unverified Client host"
#define SMTPD_NAME_CCERT "Client certificate"
#define SMTPD_NAME_SASL_USER "SASL login name"
#define SMTPD_NAME_HELO "Helo command"
#define SMTPD_NAME_SENDER "Sender address"
#define SMTPD_NAME_RECIPIENT "Recipient address"
#define SMTPD_NAME_ETRN "Etrn command"
#define SMTPD_NAME_DATA "Data command"
#define SMTPD_NAME_EOD "End-of-data"
--
Viktor.
