1. s/qmail/ENVIRONMENT VARIABLES

https://www.fehcom.de/sqmail/man/qmail-smtpd.html

1.1. qmail-smtpd

ENVIRONMENT VARIABLES READ

• Environment variables may be defined globally in the qmail-smtpd startup script and/or individually as part of the sslserver's cdb database.

• -x /var/qmail/control/rules.smtpd.cdb \

1.2. 例

HELOCHECK='!' (HELO/EHLOなしは拒否)

SPF='0'|'1'|'2'|'3'|'4'|'5'|'6'

TARPITDELAY

• tarpitdelay is the time in seconds of delay to be introduced after each subsequent Rcpt To:.

1.3. rules.smtpd.txt

...
=:allow,SPF='3',HELOCHECK="!"
:deny

1.4. V

The following environment variables are processed:

BADLOADERTYPE: Trigger and initial character of the BADLOADER mechanism.
BADMIMETYPE: Trigger of the BADMIMETYPE mechanism.
BASE64: Trigger for QHPSI for BASE64 type attachments only.
DATABYTES: Numerical value of the number of data bytes in the message body.
DELIVERTO: Additional mail address to fork the message to.
HELCOCHEK: Controlling the behavior of the HELO/EHLO string evaluation.

    LOCALMFCHECK: Triggering the evaluation of the Mail From: information.
    MFDNSCHECK: Triggering the DNS lookup of the Mail From:'s FQDN.
    MAXRECIPIENTS: Numerical value of the number of received Rcpt To:'s.
    POSTGREY: Triggering the call of qmail-postgrey client.
    RBLSMTPD: To feed the X-RBL-Info info in the message header.
    RECIPIENTS450: Triggering the SMTP Return Code behaviour.
    RELAYCLIENT: Authorization to send messages to any domain.
    REPYLMAV: Informational message following a MAV mismatch
    SMTPAUTH: Triggering the SMTP Authentication implementation.
    SPFRESULT: The result of the SPF evaluation additional to the message header.
    TARPITDELAY: Tarpit values between succeeding Rcpt To's.
    UCSPITLS: Triggering the STARTTLS communication.
    UTF8: Triggering UTF-8 receipt (no consequences, since s/qmail is 8-bit clean).