| Hostnames |
tag.w3.org mail.w3ctag.org smtp.w3ctag.org |
| Domains | w3.org w3ctag.org |
| Cloud Provider | Linode |
| Cloud Region | us-ca |
| Country | United States |
| City | Fremont |
| Organization | Linode |
| ISP | Akamai Connected Cloud |
| ASN | AS63949 |
554 5.5.0 Error: SMTP protocol synchronization
DNS Resolver name: core
DNS Resolver name: core
HTTP/1.1 200 OK Date: Wed, 05 Mar 2025 13:56:17 GMT Content-Type: text/html Content-Length: 8093 Last-Modified: Mon, 03 Mar 2025 20:27:30 GMT Connection: keep-alive Vary: Accept-Encoding ETag: "67c610b2-1f9d" Strict-Transport-Security: max-age=31536000; includeSubDomains; preload Expect-CT: enforce, max-age=2592000 Alt-Svc: h3=":443"; ma=86400, h3-29=":443"; ma=86400 X-Frame-Options: SAMEORIGIN X-Content-Type-Options: nosniff Referrer-Policy: same-origin X-Download-Options: noopen X-Permitted-Cross-Domain-Policies: none X-XSS-Protection: 1; mode=block Content-Security-Policy: default-src 'self'; img-src 'self' data: https://*.twimg.com https://platform.twitter.com https://syndication.twitter.com; script-src 'self' 'sha256-J08rpp6xsjadC8wBlp8pC2RMfSK4SpnU0TKH9lvcV2o=' https://*.twimg.com https://platform.twitter.com; style-src 'self' 'unsafe-inline' https://platform.twitter.com https://ton.twimg.com; frame-src 'self' https://syndication.twitter.com https://platform.twitter.com; frame-ancestors 'self'; report-uri https://w3ctag.report-uri.io/r/default/csp/enforce Accept-Ranges: bytes
Certificate:
Data:
Version: 3 (0x2)
Serial Number:
03:ab:73:27:d1:64:c8:cd:58:c7:e4:1e:50:4d:89:43:d1:56
Signature Algorithm: ecdsa-with-SHA384
Issuer: C=US, O=Let's Encrypt, CN=E5
Validity
Not Before: Dec 30 07:21:39 2024 GMT
Not After : Mar 30 07:21:38 2025 GMT
Subject: CN=tag.w3.org
Subject Public Key Info:
Public Key Algorithm: id-ecPublicKey
Public-Key: (384 bit)
pub:
04:45:ef:8a:c7:6c:40:bd:d9:0a:42:d4:98:f7:7b:
62:76:51:97:11:fb:07:74:5e:99:b8:e8:2d:02:b2:
67:ab:b5:6f:57:20:e7:3d:d2:d8:4b:96:88:9f:1f:
57:ab:ca:a8:a9:cb:dd:b4:96:0f:81:d9:9a:44:70:
38:1d:ae:75:d7:16:0c:cb:8d:ea:63:c8:b9:a7:37:
4d:7d:89:93:43:41:f8:9f:a6:4e:5b:fe:8c:88:57:
69:0b:f2:ac:19:93:2f
ASN1 OID: secp384r1
NIST CURVE: P-384
X509v3 extensions:
X509v3 Key Usage: critical
Digital Signature
X509v3 Extended Key Usage:
TLS Web Server Authentication, TLS Web Client Authentication
X509v3 Basic Constraints: critical
CA:FALSE
X509v3 Subject Key Identifier:
F7:33:28:1C:CB:4A:10:C5:0D:C8:4F:3B:70:FA:33:24:D4:06:89:A5
X509v3 Authority Key Identifier:
9F:2B:5F:CF:3C:21:4F:9D:04:B7:ED:2B:2C:C4:C6:70:8B:D2:D7:0D
Authority Information Access:
OCSP - URI:http://e5.o.lencr.org
CA Issuers - URI:http://e5.i.lencr.org/
X509v3 Subject Alternative Name:
DNS:tag.w3.org
X509v3 Certificate Policies:
Policy: 2.23.140.1.2.1
CT Precertificate SCTs:
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 73:20:22:0F:08:16:8A:F9:F3:C4:A6:8B:0A:B2:6A:9A:
4A:00:EE:F5:77:85:8A:08:4D:05:00:D4:A5:42:44:59
Timestamp : Dec 30 08:20:09.372 2024 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:46:02:21:00:E2:73:3F:E3:5C:DE:EB:EF:BB:37:2C:
19:73:74:FA:94:32:C8:53:AF:B4:57:A1:DA:80:7F:F7:
59:71:12:C0:EB:02:21:00:BF:58:39:CE:06:03:22:BD:
19:63:80:2F:2C:CA:C3:AD:53:53:CD:EC:40:07:0B:E1:
59:B5:78:69:E7:6E:DC:FE
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : CC:FB:0F:6A:85:71:09:65:FE:95:9B:53:CE:E9:B2:7C:
22:E9:85:5C:0D:97:8D:B6:A9:7E:54:C0:FE:4C:0D:B0
Timestamp : Dec 30 08:20:09.391 2024 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:46:02:21:00:A7:09:B1:A5:8D:02:03:9F:8D:86:D1:
14:D9:D6:4B:66:9F:95:66:EE:34:BE:D1:8F:77:2C:B7:
7A:60:63:3E:E3:02:21:00:CB:05:FE:A6:DC:A1:B4:4D:
40:56:54:9F:0D:C3:B4:DC:D1:68:A0:AB:D7:CD:A9:94:
26:1F:31:6D:22:A9:22:B8
Signature Algorithm: ecdsa-with-SHA384
Signature Value:
30:64:02:30:5a:44:15:b0:75:3e:02:b0:66:42:09:7d:fc:4a:
b8:2c:9d:de:89:d0:72:3d:1f:f5:50:03:c1:c3:04:c1:ef:a6:
c7:cf:16:06:6a:fa:bb:4b:ac:33:11:be:e8:9a:1e:75:02:30:
6f:a1:39:56:2e:56:70:bc:e7:b1:b2:8e:d9:45:10:8d:f0:29:
00:0d:c0:6d:e6:25:f7:50:85:7f:c5:d1:45:12:10:af:01:a8:
24:72:e1:2c:18:fd:5a:2f:50:b1:b2:68
220 smtp.w3ctag.org ESMTP Postfix (Debian/GNU) 250-smtp.w3ctag.org 250-PIPELINING 250-SIZE 26214400 250-ETRN 250-AUTH PLAIN LOGIN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 SMTPUTF8
Certificate:
Data:
Version: 3 (0x2)
Serial Number:
03:53:af:74:94:a4:12:61:ca:f8:df:a6:7f:83:37:36:58:cd
Signature Algorithm: ecdsa-with-SHA384
Issuer: C=US, O=Let's Encrypt, CN=E5
Validity
Not Before: Jan 29 07:16:22 2025 GMT
Not After : Apr 29 07:16:21 2025 GMT
Subject: CN=smtp.w3ctag.org
Subject Public Key Info:
Public Key Algorithm: id-ecPublicKey
Public-Key: (384 bit)
pub:
04:ac:92:ce:61:15:3a:da:e6:56:b4:83:33:d0:c9:
a3:0f:58:46:0a:76:1b:32:96:e0:da:21:78:94:89:
f6:e8:47:21:45:9b:df:36:da:26:d1:43:d1:b1:06:
0b:df:c1:ec:b8:a0:fe:3a:19:d3:28:3f:b2:98:81:
53:d8:b2:92:4e:3f:18:a5:62:c0:6b:1c:1e:4c:d1:
d0:66:8d:7f:59:a1:c5:df:a4:31:b3:57:77:f1:07:
ec:71:f1:91:81:9f:3a
ASN1 OID: secp384r1
NIST CURVE: P-384
X509v3 extensions:
X509v3 Key Usage: critical
Digital Signature
X509v3 Extended Key Usage:
TLS Web Server Authentication, TLS Web Client Authentication
X509v3 Basic Constraints: critical
CA:FALSE
X509v3 Subject Key Identifier:
00:68:90:67:43:A0:81:62:CF:2D:96:5A:8C:E4:D5:4A:AA:DC:ED:86
X509v3 Authority Key Identifier:
9F:2B:5F:CF:3C:21:4F:9D:04:B7:ED:2B:2C:C4:C6:70:8B:D2:D7:0D
Authority Information Access:
OCSP - URI:http://e5.o.lencr.org
CA Issuers - URI:http://e5.i.lencr.org/
X509v3 Subject Alternative Name:
DNS:smtp.w3ctag.org
X509v3 Certificate Policies:
Policy: 2.23.140.1.2.1
CT Precertificate SCTs:
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : E6:D2:31:63:40:77:8C:C1:10:41:06:D7:71:B9:CE:C1:
D2:40:F6:96:84:86:FB:BA:87:32:1D:FD:1E:37:8E:50
Timestamp : Jan 29 08:14:52.529 2025 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:44:02:20:35:42:EA:FC:72:C5:21:BD:3A:82:8B:C7:
AB:1B:6F:17:26:6F:9C:19:EC:93:50:93:12:7E:65:60:
5A:C9:FA:05:02:20:43:05:BF:3B:9A:DC:67:04:E9:6B:
EF:8C:24:4F:F6:25:31:A7:BE:3F:22:E3:65:8B:4E:8E:
A4:2B:43:4E:83:A9
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 4E:75:A3:27:5C:9A:10:C3:38:5B:6C:D4:DF:3F:52:EB:
1D:F0:E0:8E:1B:8D:69:C0:B1:FA:64:B1:62:9A:39:DF
Timestamp : Jan 29 08:14:52.540 2025 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:46:02:21:00:93:DA:6A:11:3C:EF:0F:CA:85:1F:06:
47:A7:AC:4E:70:52:C1:C8:37:5F:A0:76:F4:77:61:69:
40:3F:F2:9A:98:02:21:00:9F:9B:98:F3:09:4F:02:F0:
D2:96:2F:DB:93:74:66:AA:41:14:11:5A:B7:ED:6E:8C:
EB:88:C7:02:A1:7C:15:34
Signature Algorithm: ecdsa-with-SHA384
Signature Value:
30:64:02:30:43:15:70:13:c8:a1:e4:f3:f0:76:73:9f:e7:a5:
24:05:91:f7:68:23:09:d2:4f:73:88:d9:4e:da:d3:3b:4a:20:
7b:0b:34:d2:42:78:c2:85:cc:3b:e9:b6:04:3f:9a:0c:02:30:
72:fe:67:6d:60:db:bd:7d:e1:f6:b2:e5:f6:07:c3:6a:b2:d9:
1b:55:3e:f7:c8:a1:06:24:fa:63:2f:8c:c5:f4:21:75:f0:90:
aa:92:ad:f0:d6:db:49:a0:71:40:c8:80
* OK [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE LITERAL+ AUTH=PLAIN AUTH=LOGIN] Dovecot ready.
* CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE LITERAL+ AUTH=PLAIN AUTH=LOGIN
A001 OK Pre-login capabilities listed, post-login capabilities have more.
* ID ("name" "Dovecot")
A002 OK ID completed.
A003 BAD Error in IMAP command received by server.
* BYE Logging out
A004 OK Logout completed.
Certificate:
Data:
Version: 3 (0x2)
Serial Number:
04:9f:1e:2f:bb:e2:68:fc:7b:c0:b1:66:fd:1a:4b:3b:31:24
Signature Algorithm: ecdsa-with-SHA384
Issuer: C=US, O=Let's Encrypt, CN=E5
Validity
Not Before: Jan 28 07:31:26 2025 GMT
Not After : Apr 28 07:31:25 2025 GMT
Subject: CN=mail.w3ctag.org
Subject Public Key Info:
Public Key Algorithm: id-ecPublicKey
Public-Key: (384 bit)
pub:
04:ac:92:ce:61:15:3a:da:e6:56:b4:83:33:d0:c9:
a3:0f:58:46:0a:76:1b:32:96:e0:da:21:78:94:89:
f6:e8:47:21:45:9b:df:36:da:26:d1:43:d1:b1:06:
0b:df:c1:ec:b8:a0:fe:3a:19:d3:28:3f:b2:98:81:
53:d8:b2:92:4e:3f:18:a5:62:c0:6b:1c:1e:4c:d1:
d0:66:8d:7f:59:a1:c5:df:a4:31:b3:57:77:f1:07:
ec:71:f1:91:81:9f:3a
ASN1 OID: secp384r1
NIST CURVE: P-384
X509v3 extensions:
X509v3 Key Usage: critical
Digital Signature
X509v3 Extended Key Usage:
TLS Web Server Authentication, TLS Web Client Authentication
X509v3 Basic Constraints: critical
CA:FALSE
X509v3 Subject Key Identifier:
00:68:90:67:43:A0:81:62:CF:2D:96:5A:8C:E4:D5:4A:AA:DC:ED:86
X509v3 Authority Key Identifier:
9F:2B:5F:CF:3C:21:4F:9D:04:B7:ED:2B:2C:C4:C6:70:8B:D2:D7:0D
Authority Information Access:
OCSP - URI:http://e5.o.lencr.org
CA Issuers - URI:http://e5.i.lencr.org/
X509v3 Subject Alternative Name:
DNS:mail.w3ctag.org
X509v3 Certificate Policies:
Policy: 2.23.140.1.2.1
CT Precertificate SCTs:
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : CC:FB:0F:6A:85:71:09:65:FE:95:9B:53:CE:E9:B2:7C:
22:E9:85:5C:0D:97:8D:B6:A9:7E:54:C0:FE:4C:0D:B0
Timestamp : Jan 28 08:29:57.231 2025 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:21:00:8C:6E:5D:37:4A:CB:EA:AF:DA:71:62:
71:0B:EE:47:FD:A8:06:1B:44:E2:04:59:11:C8:8B:36:
03:44:C8:C1:8E:02:20:10:34:2E:42:EE:B3:BF:4F:58:
6F:2C:C5:17:FF:61:5B:B6:9E:1D:8F:B2:5E:46:49:64:
D2:A5:74:EB:B8:EA:69
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : E6:D2:31:63:40:77:8C:C1:10:41:06:D7:71:B9:CE:C1:
D2:40:F6:96:84:86:FB:BA:87:32:1D:FD:1E:37:8E:50
Timestamp : Jan 28 08:29:57.207 2025 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:20:7D:03:96:0F:16:05:C8:FF:56:F8:C1:D1:
CD:13:8B:A9:27:EC:94:72:88:9A:27:BF:50:44:26:E7:
0A:B6:7E:73:02:21:00:91:FB:AE:8E:97:66:3F:37:CE:
14:73:0C:89:CC:48:8F:F3:06:90:CA:F7:5C:13:98:01:
1F:C3:92:62:45:53:E5
Signature Algorithm: ecdsa-with-SHA384
Signature Value:
30:66:02:31:00:97:58:33:3b:09:3b:91:3d:c9:6c:4d:64:af:
00:2a:0b:69:dd:d8:e4:8e:79:ca:bf:75:af:4d:a1:23:87:6b:
61:01:7c:07:6b:c6:bf:3d:8f:45:0f:ff:68:c6:22:97:e5:02:
31:00:be:7d:38:f4:cc:cc:b3:bb:b5:eb:1e:16:71:70:2d:18:
06:53:8f:0e:4a:82:08:5e:de:11:bf:31:4a:aa:8b:c2:61:0b:
ac:6e:76:60:b6:42:b6:a7:5d:d8:2c:d4:62:c6
\x01\x01\x00,!\x12\xa4B0wUp2q2xqqjj\x00 \x00\x08\x00\x01\xad\xb8^\x12\xa4C\x80"\x00\x14Coturn-4.6.3 \'Gorst\'\x80(\x00\x04\x81\x17R\xeb