Spf smtp status softfail all MTA option

SPF MTA options: (2, 4, or 5)
The  MTA option controls whether  SPF SoftFail "all" results are ignored (considered as successes), interpreted as temporary failures, or  interpreted as permanent failures, with values of 2 (the default), 4, or 5, respectively, controlling this. (To emphasize, this option is controlling the interpretation of SPF lookups that succeeded in finding a relevant SPF record in the DNS and where the SPF record specified an explicit SoftFail all subdomains of some domain name where the domain name being checked matched; for interpretation of SPF lookups that find a relevant SPF record for the exact domain name being checked, see instead the   MTA option. And for interpretation of DNS-level temporary errors in the SPF lookup attempt, see instead the     MTA option.)

See also:
 * SPF MTA options
 * spfhelo Option
 * spfmailfrom Option
 * spfrcptto Option
 * spf_smtp_status_softfail MTA Option
 * spf_smtp_status_temperror MTA Option
 * error_text_spf_softfail_4 MTA Option
 * error_text_spf_softfail_5 MTA Option