Report for kmuh.gov.tw

Report created on: Thu, 06 Feb 2025 06:30:59 GMT
Parent
60
NS
0
SOA
0
MX
100
Mail
53
Web
87
Parent
NS Records at Parent Servers
We have successfully fetched domain's NS records from parent name server (c.twnic.net.tw.).
Domain NS records:
  • dns.kmuh.gov.tw. TTL=86400 [60.249.225.18] [NO GLUE6]
  • dns2.kmuh.gov.tw. TTL=86400 [60.249.225.30] [NO GLUE6]
Missing Glue
OK. Parent name servers are offering glue for domain's name servers. We received name servers list and it's IP addresses from parent name server (c.twnic.net.tw.).
Name Servers Have A Records
FAIL: While reading domain NS records at parent name servers, we found name servers without A records.
  • Taiwan dns.kmuh.gov.tw. → 60.249.225.18
  • -- dns2.kmuh.gov.tw. → ?
To reach your name servers via IPv4 an A record is needed for each name server.
Name Servers Have AAAA Records
NOTICE: While reading domain NS records at parent name servers, we found name servers without AAAA records.
  • dns.kmuh.gov.tw. → ?
  • dns2.kmuh.gov.tw. → ?
To reach your name servers via IPv6 an AAAA record is needed for each name server.
NS
SOA
MX
MX Records
Your name servers returned 1 MX records. Your MX records sorted by priority (lower numbers have higher priority):
  • 10 spam.vghks.gov.tw. TTL=60
Identical MX Records
OK. All name servers returned identical MX records.
Mail Servers Have A Records
OK. Found A records for all mail servers.
  • Taiwan spam.vghks.gov.tw. → 203.68.94.7
To reach your mail servers via IPv4 an A record is needed for each mail server.
Mail Servers Have AAAA Records
NOTICE: While reading domain NS records at parent mail servers, we found mail servers without AAAA records.
  • spam.vghks.gov.tw. → ?
To reach your mail servers via IPv6 an AAAA record is needed for each mail server.
Reverse Entries for MX records
OK. All mail servers have reverse DNS entries configured correctly.
Server IP PTR (Reverse) IPs
spam.vghks.gov.tw. 203.68.94.7 spam.vghks.gov.tw. 203.68.94.7

All mail servers should have a reverse DNS (PTR) entry for each IP address (RFC 1912). Missing reverse DNS entries will make many mail servers to reject your e-mails or mark them as SPAM.

All IP's reverse DNS entries should resolve back to IP address (IP → PTR → IP). Many mail servers are configured to reject e-mails from IPs with inconsistent reverse DNS configuration.

Check MX Records for Invalid Chars
OK. No invalid characters found. Name field from MX records should be a valid host name.
Check MX Records IPs are Public
OK. No private IPs found. Mail servers using private IPs can't be reached from the Internet causing mail delivery delays.
Check MX Records for Duplicates
OK. No MX records duplicates (same IP addresses) found. Although technically valid, duplicate MX records have no benefits and can cause confusion.
Only Host Names in MX Records
OK. No IPs found in MX records. IP addresses are not allowed in MX records, only host names.
No CNAME in MX Records
OK. No CNAMEs found in MX records. RFC 2181, section 10.3 says that host name must map directly to one or more address record (A or AAAA) and must not point to any CNAME records. RFC 1034, section 3.6.2 says if a name appears in the right-hand side of RR (Resource Record) it should not appear in the left-hand name of CNAME RR, thus CNAME records should not be used with NS and MX records. Despite this restrictions, there are many working configuration using CNAME with NS and MX records.
RBL Check
OK. Mail servers IPs are not blacklisted.
Mail
Connect to Mail Servers
OK. Successfully connected to all mail servers.
  • spam.vghks.gov.tw.: 
    220 spam.vghks.gov.tw ESMTP Softmail New MTA Thu, 6 Feb 2025 14:31:12 +0800 (+08)
To receive emails, mail servers should allow TCP connections on port 25.
Mail Greeting
OK. No differences between mail server host names and greeting host name.
Accepts Postmaster Address
OK. All mail servers are accepting emails to postmaster@kmuh.gov.tw address:
  • spam.vghks.gov.tw. 
    >> MAIL FROM: <postmaster@dnscheck.pro>
<< 250 2.1.0 <postmaster@dnscheck.pro>... Sender ok
>> RCPT TO: <postmaster@kmuh.gov.tw>
<< 250 2.1.5 <postmaster@kmuh.gov.tw>... Recipient ok
RFC 822, RFC 1123 and RFC 2821 requires that all domain's mail servers should accept e-mails to postmaster. To be compliant you can create an alias and forward all postmaster's e-mails to a valid mailbox.
Accepts Abuse Address
OK. All mail servers are accepting emails to abuse@kmuh.gov.tw address:
  • spam.vghks.gov.tw. 
    >> MAIL FROM: <postmaster@dnscheck.pro>
<< 250 2.1.0 <postmaster@dnscheck.pro>... Sender ok
>> RCPT TO: <abuse@kmuh.gov.tw>
<< 250 2.1.5 <abuse@kmuh.gov.tw>... Recipient ok
Check SPF record
WARNING: Domain doesn't have SPF record. SPF (Sender Policy Framework) record is designed to prevent e-mail spoofing. Typical SPF record would be:
v=spf1 a mx ~all or v=spf1 a mx include:_spf.google.com ~all if you are using Google Apps.
Check DMARC record
FAIL: Domain doesn't have DMARC record.

The DMARC uses DKIM keys published in the DNS or IP addresses specified in the SPF record to authenticate emails to protect domain from fraudulent emails.

You can specify a policy how to deal with emails which fails authentication. A typical policy would be to reject, this applies to the domain and all its subdomains without an explicit policy. The DMARC policy has precedence over SPF policy. If you are more conservative, you can start with quarantine.

Example DMARC record:
v=DMARC1; p=quarantine
The authenticated emails will be delivered in the Inbox and others in the Spam/Junk folder.
Web
Resolve Domain Name
WARNING: Could not resolve domain kmuh.gov.tw..
Resolve WWW
OK. Domain www.kmuh.gov.tw. resolves to:
  • Taiwan 203.66.204.56
WWW IPs are Public
OK. No private IPs found for www.kmuh.gov.tw.. Web servers using private IPs can't be reached from the Internet.

Report completed in 17.58 seconds.

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