>>> #
>>> # Initialize.
>>> #
>>> #! ../bin/postmap smtpd_check_access
>>> #msg_verbose 1
>>> smtpd_delay_reject 0
OK
>>> #
>>> # Test the new access map features
>>> #
>>> sender_restrictions hash:./smtpd_check_access
OK
>>> mail rejecttext@bad.domain
./smtpd_check: <queue id>: reject: MAIL from localhost[127.0.0.1]: 554 5.7.1 <rejecttext@bad.domain>: Sender address rejected: text; from=<rejecttext@bad.domain> proto=SMTP
554 5.7.1 <rejecttext@bad.domain>: Sender address rejected: text
>>> mail filter@filter.domain
./smtpd_check: warning: access table hash:./smtpd_check_access entry "filter@filter.domain" has FILTER entry without value
OK
>>> mail filtertext@filter.domain
./smtpd_check: warning: access table hash:./smtpd_check_access entry "filtertext@filter.domain" requires transport:destination
OK
>>> mail filtertexttext@filter.domain
./smtpd_check: <queue id>: filter: MAIL from localhost[127.0.0.1]: <filtertexttext@filter.domain>: Sender address triggers FILTER text:text; from=<filtertexttext@filter.domain> proto=SMTP
OK
>>> mail hold@hold.domain
./smtpd_check: <queue id>: hold: MAIL from localhost[127.0.0.1]: <hold@hold.domain>: Sender address triggers HOLD action; from=<hold@hold.domain> proto=SMTP
OK
>>> mail holdtext@hold.domain
./smtpd_check: <queue id>: hold: MAIL from localhost[127.0.0.1]: <holdtext@hold.domain>: Sender address text; from=<holdtext@hold.domain> proto=SMTP
OK
>>> mail discard@hold.domain
./smtpd_check: <queue id>: discard: MAIL from localhost[127.0.0.1]: <discard@hold.domain>: Sender address triggers DISCARD action; from=<discard@hold.domain> proto=SMTP
OK
>>> mail discardtext@hold.domain
./smtpd_check: <queue id>: discard: MAIL from localhost[127.0.0.1]: <discardtext@hold.domain>: Sender address text; from=<discardtext@hold.domain> proto=SMTP
OK
>>> mail dunnotext@dunno.domain
OK