Am 07.12.2011 17:17, schrieb Wietse Venema: > Reindl Harald: >> 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 > > Yes it was. I point the attention to the RIGHT problem, which is > fixing the suboptimal configuration that does domain queries from > SQL.
this is only "suboptimal" because the behavior to hang instead a tempfail, you CAN NOT remive domains from sql if you maintain your servers over sql-backends and automatisms where as example 10 different machine have to use instantly the same configuration
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