On Wed, Oct 28, 2020 at 11:34:35AM -0400, Joey J wrote:
> Since you are looking within the code, on a reject we used to put
> @abc.com 550 and custom reject message
There's no need to consult the code. The lookup keys for access(5)
tables are documented. They DO NOT include "@domain". To reject
mail to/from all users at a domain the lookup key is just the
domain name. See the documentation.
http://www.postfix.org/access.5.html
EMAIL ADDRESS PATTERNS
With lookups from indexed files such as DB or DBM, or from
networked
tables such as NIS, LDAP or SQL, patterns are tried in the order
as
listed below:
user@domain
Matches the specified mail address.
domain.tld
Matches domain.tld as the domain part of an email address.
The pattern domain.tld also matches subdomains, but only
when
the string smtpd_access_maps is listed in the Postfix
par-
ent_domain_matches_subdomains configuration setting.
.domain.tld
Matches subdomains of domain.tld, but only when the
string
smtpd_access_maps is not listed in the Postfix
par-
ent_domain_matches_subdomains configuration setting.
user@ Matches all mail addresses with the specified user part.
Note: lookup of the null sender address is not possible with some
types
of lookup table. By default, Postfix uses <> as the lookup key for
such
addresses. The value is specified with the
smtpd_null_access_lookup_key
parameter in the Postfix main.cf file.
--
Viktor.
