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88
Total
90
DNS
90
Email
100
Security
20
Network
100
Availability
Domaintn.edu.tw
IPv41
IPv60
MX records2
StatusActive
Domain technical report

台南市教育局電子郵件系統

tn.edu.tw

Generated: 2026-08-12T05:18:21-05:00 · Cached result

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IPv41
IPv60
MX2
NS2

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

!
IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

2 NS record(s); 2 or more required.

✓
SOA record10 / 10 pts · Dns

Authoritative zone record.

✓
DNSSEC chain15 / 15 pts · Dns

DS and DNSKEY detected.

✓
CAA policy5 / 5 pts · Dns

Certificate authority restriction.

✓
DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓
MX records20 / 20 pts · Mail

2 MX record(s).

✓
SPF25 / 25 pts · Mail

SPF policy published.

✓
DMARC25 / 25 pts · Mail

DMARC policy published.

✓
DKIM20 / 20 pts · Mail

A DKIM selector was verified.

!
MTA-STS0 / 5 pts · Mail

Mail transport policy.

!
TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

181 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

✓
HTTP security headers35 / 35 pts · Security

9 of 9 evaluated headers detected.

!
PTR reverse DNS0 / 30 pts · Network

PTR not detected.

i
IPv4 diversity20 / 35 pts · Network

Two or more IPv4 addresses receive full points.

!
IPv6 connectivity0 / 35 pts · Network

AAAA availability.

✓
DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

✓
HTTP response40 / 40 pts · Availability

HTTP/1.1 200 OK

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)
163.26.1.72

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

2 record(s)
10 mx.tn.edu.tw.
20 mg2.tn.edu.tw.

TXT

5 record(s)
"TNf6fV3tfw8S8cXagNuQyJ2yYHChmsugA0OhH6L8Za4"
"qywuyj4tAtFoqln4dMPUaE55RV_YjVV68P6wg6f3_es"
"v=spf1 ip4:163.26.1.174 ip4:163.26.1.175 ip4:163.26.1.63 ip4:163.26.1.64 ip6:2001:288:7200:1::63 ip6:2001:288:7200:1::64 ~all"
"1DFzqKGRoPn1B00bkLUMsPHCI1c4y0pgns7Jp3ANRZ4"
"719a498a4a39e170b0ac80225ffb40dbf7e8babd173760e3e6be19e99ee4092"

NS

2 record(s)
secdns.tn.edu.tw.
tns.tn.edu.tw.

SOA

1 record(s)
tns.tn.edu.tw. abuse.tn.edu.tw. 2026081202 21600 1800 1209600 3600

CAA

14 record(s)
0 issue "gtlsca.nat.gov.tw"
0 issue "letsencrypt.org"
0 issuewild "pki.hinet.net"
0 issuewild "twca.com.tw"
0 issue "sectigo.com"
0 issue "pki.hinet.net"
0 issuewild "globalsign.com"
0 issue "globalsign.com"
0 issue "comodoca.com"
0 issuewild "certum.pl"
0 issuewild "sectigo.com"
0 issue "certum.eu"
0 issue "certum.pl"
0 issue "twca.com.tw"

DS

2 record(s)
8589 7 2 41D5C16872CF4CA8644845FF765C26309E0694A1F3873DCEF89E321B FA733E60
8589 7 1 36BE1AEF9B4EF8976FF2A5DB6E3E38EE13BE45FA

DNSKEY

1 record(s)
257 3 7 AwEAAbDTCn73O8LIVLQV0cn1COAKW1jHwH9Hi40vV6RvjLTQAOytmq6m E1MwNovJCYSNdDedJ5KdDGqrgDFdulh0JQVENVUQBT2Km2sso8whTJJy csMP1LIdhiRVdwK7cDXe0PIQH7dLIwas8yiY7HYdgz7lKsUOR6PmjqiD IVzGeCalm/IU6URVubCuAkvbTSH/Rz4/k7gtZ0m2KHezuQnwW1xHi+7E MTUOW+sj9VXHioCpd/sNZT6xZbzHOLNJH0u66N6NKM4KitQBJBvNnrnN k4kP1j8998d+/z18fpzNQfnPzr1OfLyhDfFHhYGd1AaDN//ikzjq4/IT p9GXHiZYvvs=

RRSIG

4 record(s)
SOA 7 3 7200 20271231235959 20260811230754 8589 tn.edu.tw. p9X5dc3DOo/jRlKe5SV1BTT+kwX1pSWxbNcKiYou5ZsnzEZd/TrDi+EC SSHhXH2iXrThRMM9WV3srY4SAPv8N6ZSXhrDAAJwLeWImUF+IebEXo75 QQmwNt1FuUFhFjIhLtclM1VElPyWt+kcTU5JWew+nBdZ15oBptGM4AIW zCEcf8dRUr1BAMWA/pO0+mWkoXKZgDvjaiWth1hUKEB25V+43ryaJiaw 28IfzyrdIgXbP7blwN+4g/m4SRv7EowQYVHx0eqFDtaxP44GFwMhASQS CdOk+JuoDBpUeb9g+mkkPgwG8S/8eziBKpaRYLJG40WJLzs7DzBm5k5r aeWBBQ==
DS 8 3 300 20260816091648 20260812081802 52491 edu.tw. H5y20fEZ0WrtOfhxib7LPmHWL0hflEZ/Bw9uKmPfk6n9775A/8XDnLL/ w7Z72+35/+hJQ8Po57UHJWdRxR2GYcOHRd4OZz6A7ZnM+VfE8/gaE+b8 lVOYh1hOO3y6iTBlGlYPbwrRhy6vxI4H1pF1G6ZUTYd/JGlWQfACm2EY Ttk=
A 7 3 7200 20271231235959 20260811230754 8589 tn.edu.tw. VK9ccB9osgF388qmJM4UZogvlDkpnzbk9OLR40O9VyBR2DsBDDwvuFSn W+ZC6x5LVbd8M865xGcFBA3IFalXH+7sc56JkjZ2LOXmzfglDx5NeIcn RVf9STkJ6Oe7zOg3GKry47ExNqIlkcoo3Xvf+GDIu4NCZ/egmIIHpksS txH3y43HrnrjoW1d+CfzkYEVdPibaPrdzh2yiV7Vq3wdNmRT/DmaieR9 JgffBr/DzRsBMKs5e5KHqZtg/V5RhyzoENJdnNxJLPqedHYpwKMzu6Cx 5kkdD0ISNKhcETF1c+zBVYw3uJdlOWNo4f7iGInEhtpaddKsVSyOgEpk A2TOAA==
TXT 7 3 7200 20271231235959 20260811230754 8589 tn.edu.tw. Wc+B8P+sch6G8nEiXr+tTgzZ/hlsTYEr5Dji5+itsETTIKPZSUF9lx8Z 9dhLYHfjtqBvyvKdSTEZuTqlQSDRuUR3tb11dCDxNDw6xFOu4b0FRBSJ 3xwDAzSj3saIba2Rb25GZ8SoVmH8E0NjklC/bMglca/RL1ey9kwC0qe6 2rODSabB2DuAAYlQMatu+O7ZPPvTL+pZ3mTdU4o+Ou34/SZlvTWtRwRk Ebx6/4iJUvRdX7/skYF0A9hbHd8NAFGv2i7n44vGg0kslI+VS0r4QLUJ +TvrrlePlFp592+pEXxhraIeFuLSgDuvOwGsL06VdOIY1/r88UfsZwPE 4O1+Xg==

NSEC

0 record(s)
—

Not configured

NSEC3

0 record(s)
—

Not configured

SRV

0 record(s)
—

Not configured

NAPTR

0 record(s)
—

Not configured

TLSA

0 record(s)
—

Not configured

SSHFP

0 record(s)
—

Not configured

SPF

Configured
v=spf1 ip4:163.26.1.174 ip4:163.26.1.175 ip4:163.26.1.63 ip4:163.26.1.64 ip6:2001:288:7200:1::63 ip6:2001:288:7200:1::64 ~all

DMARC

Configured
v=DMARC1;p=quarantine;pct=100;rua=mailto:postmaster@tn.edu.tw;ruf=mailto:postmaster@tn.edu.tw;

DKIM

Selector default
k=rsa;p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxHOTUS//0fH4fWQX1oJsLJJBy5nBS2kqJgNFHB/qNm4XQqvURjMvlgtVQ/UI/0Yl63rKZCcHS/HbFYtssXCQCK2QqKQfEsB7LjFlDwmNTXAuhbRwlvm1gfJQDylulB8LXgd7UBwAyOeQKamEWFsINbC797UAqFFh8m67VTOq6tbDrzNAqBGPMcMlfvdf9cbq55db4+zMSCAiwDqef2YkJt4H2MOYh9r3ddK6ozHao0iM5qSVzC2horjxrsdpZpOprxZruXeRkVXOFCGLPag6WDKWi+hX35zr1bMevBN2eAqRUZvgCxUcwplixq/wdDCPnPyG1mW3uOG+843a6HBVxwIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
台南市教育局電子郵件系統
Description
Final URL
https://mail.tn.edu.tw/view/login
HTTP status
206

HTTP

Status
HTTP/1.1 200 OK
Final URL
https://mail.tn.edu.tw/view/login
Version
2
Server
Apache
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
TAIWAN-CA
CN
*.tn.edu.tw
Valid from
2026-01-19T02:46:18-06:00
Valid until
2027-02-09T09:59:59-06:00
Days remaining
181
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

9 active
✓
HSTSImplemented
✓
Content Security PolicyImplemented
✓
X-Content-Type-OptionsImplemented
✓
X-Frame-OptionsImplemented
✓
Referrer PolicyImplemented
✓
Permissions PolicyImplemented
✓
Cross-Origin-Opener-PolicyImplemented
✓
Cross-Origin-Embedder-PolicyImplemented
✓
Cross-Origin-Resource-PolicyImplemented

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent
✓
Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
163.26.1.72
223,81 ms
Cloudflare
1.1.1.1
163.26.1.72
575,27 ms
Quad9
9.9.9.9
163.26.1.72
40,02 ms
OpenDNS
208.67.222.222
163.26.1.72
2.504,83 ms
AdGuard
94.140.14.14
163.26.1.72
1.071,65 ms

IP, geolocation and ASNAssociated network information

163.26.1.72

No data
success
No
country
region
city
asn
organization
isp

Visitor information

Visitor
ip
216.73.216.212
reverse
country
country_code
region
city
latitude
longitude
isp
organization
asn
timezone
browser
Other
os
Other
language
user_agent
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
is_bot
Yes
cloudflare
No

SMTPEmail port connectivity

mx.tn.edu.tw

Port 25: Closed/unreachable - 184.8 ms - 
Port 465: Closed/unreachable - 198.3 ms - 
Port 587: Closed/unreachable - 177.8 ms - 220 mx.tn.edu.tw ESMTP MailSherlock-MailFilter 5.5

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