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smtp-check: Check SPF and be verbose about errors

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This commit is contained in:
Alberto Bertogli
2016-10-26 22:59:22 +01:00
parent 54cce0c2bf
commit 3865dd0ea4
1 changed files with 15 additions and 2 deletions
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17
cmd/smtp-check/smtp-check.go
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@@ -8,6 +8,7 @@ import (
"net" "net"
"net/smtp" "net/smtp"
"blitiri.com.ar/go/chasquid/internal/spf"
"blitiri.com.ar/go/chasquid/internal/tlsconst" "blitiri.com.ar/go/chasquid/internal/tlsconst"
"golang.org/x/net/idna" "golang.org/x/net/idna"
@@ -43,6 +44,18 @@ func main() {
for _, mx := range mxs { for _, mx := range mxs {
log.Printf("=== Testing MX: %2d %s", mx.Pref, mx.Host) log.Printf("=== Testing MX: %2d %s", mx.Pref, mx.Host)
ips, err := net.LookupIP(mx.Host)
if err != nil {
log.Fatal(err)
}
for _, ip := range ips {
result, err := spf.CheckHost(ip, domain)
if result != spf.Pass {
log.Printf("SPF check != pass for IP %s: %s - %s",
ip, result, err)
}
}
c, err := smtp.Dial(mx.Host + ":" + *port) c, err := smtp.Dial(mx.Host + ":" + *port)
if err != nil { if err != nil {
log.Fatal(err) log.Fatal(err)
@@ -55,11 +68,11 @@ func main() {
} }
err = c.StartTLS(config) err = c.StartTLS(config)
if err != nil { if err != nil {
log.Fatal(err) log.Fatalf("TLS error: %v", err)
} }
cstate, _ := c.TLSConnectionState() cstate, _ := c.TLSConnectionState()
log.Printf("%s - %s", tlsconst.VersionName(cstate.Version), log.Printf("TLS OK: %s - %s", tlsconst.VersionName(cstate.Version),
tlsconst.CipherSuiteName(cstate.CipherSuite)) tlsconst.CipherSuiteName(cstate.CipherSuite))
log.Printf("") log.Printf("")