Am 07.12.2011 16:59, schrieb Wietse Venema: > Sebastian Wiesinger: >> I read these but it's not clear to me. So the transport lookup doesn't >> work, but why does that prevent postfix from doing a 4xx error code? > > You should remove the domains from SQL (or LDAP or other slow tables). > > Once you do that, smtpd will reply 4xx after email address lookup > error (it won't reply 4xx when trivial-rewrite can't look up the > domain).
the question was WHY it won't
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