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Josh ChaitinPollak wrote: > Hello, > > We have a problem at work where our slapd LDAP daemon has been going > down repeatedly. When this happens, our SMTP daemon (postfix on another > machine) starts bouncing messages because it can't look up and verify > account names. Is there a way to configure postfix to not bounce, but > send 'try again later' or something else, when it can't connect to the > ldap server? > > Isn't there a way postfix can tell the difference between 'no account' > and 'account verification mechanism unavailable'? > > We recently split the ldap and mail servers onto two separate boxes to > make them more reliable, but this seems to have only caused more > problems. Should I be mirroring the ldap config on the mail server? > > Of course, stopping slapd from crashing is my first priority, but this > hard dependancy between the two is a real problem. I know there is an > option to configure postfix to accept mail for all addresses, even ones > that it isn't aware of, but I'd rather not resort to that, then nothing > will ever bounce. > > -Josh in main,cf: # The unknown_local_recipient_reject_code specifies the SMTP server # response code when a recipient domain matches $mydestination or # $inet_interfaces, while $local_recipient_maps is non-empty and the # recipient address or address local-part is not found. # # The default setting is 550 (reject mail) but it is safer to start # with 450 (try again later) until you are certain that your # local_recipient_maps settings are OK. # #unknown_local_recipient_reject_code = 550 unknown_local_recipient_reject_code = 450
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