header GB_FORGED_MUA_TBIRD User-Agent =~ /^User-Agent\: Mozilla\/.* Thunderbird/ describe GB_FORGED_MUA_TBIRD Forged Thunderbird Mua header __FORGED_MUA_POSTFIX0 User-Agent =~ /Postfix/ header __FORGED_MUA_POSTFIX1 X-Mailer =~ /Postfix/ meta GB_FORGED_MUA_POSTFIX ( __FORGED_MUA_POSTFIX0 || __FORGED_MUA_POSTFIX1 ) describe GB_FORGED_MUA_POSTFIX Forged Postfix mua headers tflags GB_FORGED_MUA_POSTFIX publish score GB_FORGED_MUA_POSTFIX 2.0 # limit