refactor: merged duplicated code into mxErr,
refactor: merged duplicated code into mxErr,

moved implicit_mx to it's own function

baudehlo/Haraka,niteoweb/Haraka,MignonCornet/Haraka,fatalbanana/Haraka,jaredj/Haraka,hiteshjoshi/my-haraka-config,Dexus/Haraka,jaredj/Haraka,zombified/Haraka,jjz/Haraka,typingArtist/Haraka,AbhilashSrivastava/haraka_sniffer,haraka/Haraka,baudehlo/Haraka,baudehlo/Haraka,hatsebutz/Haraka,smfreegard/Haraka,DarkSorrow/Haraka,craigslist/Haraka,typingArtist/Haraka,baudehlo/Haraka,slattery/Haraka,fatalbanana/Haraka,typingArtist/Haraka,haraka/Haraka,Synchro/Haraka,DarkSorrow/Haraka,DarkSorrow/Haraka,smfreegard/Haraka,niteoweb/Haraka,Synchro/Haraka,zombified/Haraka,bsmr-x-script/Haraka,MignonCornet/Haraka,Dexus/Haraka,zombified/Haraka,Dexus/Haraka,craigslist/Haraka,hatsebutz/Haraka,msimerson/Haraka,DarkSorrow/Haraka,slattery/Haraka,craigslist/Haraka,niteoweb/Haraka,danucalovj/Haraka,zombified/Haraka,jjz/Haraka,msimerson/Haraka,slattery/Haraka,jjz/Haraka,smfreegard/Haraka,slattery/Haraka,MignonCornet/Haraka,fatalbanana/Haraka,typingArtist/Haraka,jjz/Haraka,hiteshjoshi/my-haraka-config,haraka/Haraka,Synchro/Haraka,msimerson/Haraka,jaredj/Haraka,bsmr-x-script/Haraka,AbhilashSrivastava/haraka_sniffer,fatalbanana/Haraka,danucalovj/Haraka,AbhilashSrivastava/haraka_sniffer,MignonCornet/Haraka,AbhilashSrivastava/haraka_sniffer,hatsebutz/Haraka,hatsebutz/Haraka,haraka/Haraka,danucalovj/Haraka,danucalovj/Haraka,bsmr-x-script/Haraka,hiteshjoshi/my-haraka-config,smfreegard/Haraka,Synchro/Haraka,Dexus/Haraka,craigslist/Haraka,msimerson/Haraka,jaredj/Haraka,bsmr-x-script/Haraka