Temporary switch to my own fork of smtpd which contains a few fixes

go.mod

@@ -1,6 +1,6 @@
 module code.bluelife.at/decke/smtp-proxy
 
 require (
-	github.com/chrj/smtpd v0.1.1
+	github.com/decke/smtpd v0.0.0-20181214110435-1f3aff7474b8
 	github.com/vharitonsky/iniflags v0.0.0-20180513140207-a33cd0b5f3de
 )

go.sum

@@ -1,5 +1,4 @@
-github.com/chrj/smtpd v0.1.1 h1:Jk9ZimOh4njDpMbDLPmdQX+x9AUYGrfE68EyjuQDPjk=
-github.com/chrj/smtpd v0.1.1/go.mod h1:jt4ydELuZmqhn9hn3YpEPV1dY00aOB+Q1nWXnBDFKeY=
-github.com/eaigner/dkim v0.0.0-20150301120808-6fe4a7ee9cfb/go.mod h1:FSCIHbrqk7D01Mj8y/jW+NS1uoCerr+ad+IckTHTFf4=
+github.com/decke/smtpd v0.0.0-20181214110435-1f3aff7474b8 h1:4cxncWOi/sMl5iIDeHSbZK2PaScLnkPtpFbLZKucRR0=
+github.com/decke/smtpd v0.0.0-20181214110435-1f3aff7474b8/go.mod h1:OyvvH44eeOtQNmo+Ab8VhaRJLi3nGCFurXqo4g3z/Go=
 github.com/vharitonsky/iniflags v0.0.0-20180513140207-a33cd0b5f3de h1:fkw+7JkxF3U1GzQoX9h69Wvtvxajo5Rbzy6+YMMzPIg=
 github.com/vharitonsky/iniflags v0.0.0-20180513140207-a33cd0b5f3de/go.mod h1:irMhzlTz8+fVFj6CH2AN2i+WI5S6wWFtK3MBCIxIpyI=

main.go

@@ -9,7 +9,7 @@ import (
 	"strings"
 	"time"
 
-	"github.com/chrj/smtpd"
+	"github.com/decke/smtpd"
 	"github.com/vharitonsky/iniflags"
 )