smtphost.cis.strath.ac.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:f1:5e:94:7f:ce:02:21:de:cb:1f:e1:33:a1:4e:75:1e:42 was issued on by Let's Encrypt.
With 3 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate has already expired and will cause a warning or error message in the browser it's still listed on this site to allow you to look back on previously issued certificates. If we have found any compliance issues with this certificate they will be shown below. I hope this certificate review is providing you the detailed information in a simple form you where looking for.
We have idenified some issues with this certificate:
- Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)
Certificate Subject
CN=smtphost.cis.strath.ac.uk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:f1:5e:94:7f:ce:02:21:de:cb:1f:e1:33:a1:4e:75:1e:42Serial Number (int): 343470626706953435939471592052325495414338
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 42:32:42:5e:33:8d:6f:bb:60:3c:54:56:23:d3:9a:e5:73:60:0b:08
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 47:9e:3b:3a:c9:d5:80:bd:59:6c:07:06:a1:a8:95:4e:f3:4c:28:67
Fingerprint (sha256): 01:a6:32:73:64:d2:44:46:c6:ad:b5:e8:33:b8:7a:9e:c8:73:a4:36:a7:0b:8a:5c:ab:11:ed:6a:df:1d:56:ba
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate smtphost.cis.strath.ac.uk
3
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for smtphost.cis.strath.ac.uk
Public Key Algorithm
RSA
Key Size
2048
Signature Algorithm
SHA256 with RSA
Key Usage
Digital Signature
Key Encipherment
Extended Key Usages
Server Authentication
Client Authentication
Extensions
9 extensions
No
unhandled critical extensions
CA Certificate
This is not a CA certificate
Subject Alternative Names
imaphost.cis.strath.ac.uk
lists.cis.strath.ac.uk
smtphost.cis.strath.ac.uk
lists.cis.strath.ac.uk
smtphost.cis.strath.ac.uk
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Certificate
The complete raw certificate details for smtphost.cis.strath.ac.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFnDCCBISgAwIBAgISA/FelH/OAiHeyx/hM6FOdR5CMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTExMTkxMjA0NDlaFw0y MDAyMTcxMjA0NDlaMCQxIjAgBgNVBAMTGXNtdHBob3N0LmNpcy5zdHJhdGguYWMu dWswggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDwps3BYB/oYJBiFPTl OujUEYShHS5AV2Ubdcqy5pnug4jOk7tcZmRIzJn5cf0bBb7EMJMAyaycmbBmJKDh 7WhOrxHnPVHqweL/FZQjbwHZlNVh9ft3k0uUs3/vQkUX9X0N3RQQ8Fs9MVh9r732 roqQnvrGj8cN6IimN8J+y5GWCtD1TWUK/G86iQVo6O+6ExLWDPReTXqqhGWHhkso SKYIHb939eKhZB0QH4LXg2fevdsE/mWAH1UZ335L+FVmoaLzctGvQO59qL0t90ve bmanqKJjkLi8hp6iHuYEmR+oejriS1m9ivNV33IYZBgPja7YjtktIkah0d/Ex8IF fc8jAgMBAAGjggKgMIICnDAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYB BQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFEIyQl4zjW+7 YDxUViPTmuVzYAsIMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMG8G CCsGAQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgzLmxl dHNlbmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgzLmxl dHNlbmNyeXB0Lm9yZy8wVwYDVR0RBFAwToIZaW1hcGhvc3QuY2lzLnN0cmF0aC5h Yy51a4IWbGlzdHMuY2lzLnN0cmF0aC5hYy51a4IZc210cGhvc3QuY2lzLnN0cmF0 aC5hYy51azBMBgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYG CCsGAQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQMGCisGAQQB 1nkCBAIEgfQEgfEA7wB2APCVpFnyANGCQBAtL5OIjq1L/h1H45nh0DSmsKiqjrJz AAABboPD+pcAAAQDAEcwRQIgVZq8XErWhRN8gPMO5i5dx2AnP69eTPlJx2HfD6a6 brACIQC35m9RpnRR82LmiuvkS47FbsCXjaXvDi96RhEo7K++zgB1ALIeBcyLos2K IE6HZvkruYolIGdr2vpw57JJUy3vi5BeAAABboPD+o8AAAQDAEYwRAIgd9bSuhH+ Gmb4+NMl6WtrZ4oRYFBDogMK7D7joHvLJbACIGNloKZnDDL8LtCCR+VpTCHekdKq INELpttKRpu/pqnxMA0GCSqGSIb3DQEBCwUAA4IBAQBc7raPk6wz243lhFxTrwuR shKhBZjI8gR3DIN0sxTLskuR16LitLpsmAkoAVXoC3bI+VGANMxc59JuLSeR6XqK 1a3iR5amNj/898gTVq0yRHa6CYCYLB4C7ymj033i3s+90NLuGT3Fbv+/XoDhuQ9S OjJ/WL/N84O5BoGSdoB1fDeTDEtTosexLl9MJRdLliAsdudr6gEvttO3EqI4cXHX fCeYE+PNYKL5rr3z/+P1kKFWa9r14B215zQOq7Cq2mNY7wnLBEIWDeVjTQ81adhl RLdIt+d4zVaMyHTVW8HR9AenJ8Q0GsYE5h+6GFAmmrPw2SA504XiOKxt3hYztO7t -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA8KbNwWAf6GCQYhT05Tro 1BGEoR0uQFdlG3XKsuaZ7oOIzpO7XGZkSMyZ+XH9GwW+xDCTAMmsnJmwZiSg4e1o Tq8R5z1R6sHi/xWUI28B2ZTVYfX7d5NLlLN/70JFF/V9Dd0UEPBbPTFYfa+99q6K kJ76xo/HDeiIpjfCfsuRlgrQ9U1lCvxvOokFaOjvuhMS1gz0Xk16qoRlh4ZLKEim CB2/d/XioWQdEB+C14Nn3r3bBP5lgB9VGd9+S/hVZqGi83LRr0Dufai9LfdL3m5m p6iiY5C4vIaeoh7mBJkfqHo64ktZvYrzVd9yGGQYD42u2I7ZLSJGodHfxMfCBX3P IwIDAQAB -----END PUBLIC KEY-----
ASN.1 decoded
[c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:2|t:0|true] OtherName . . . . . . . . . . . . [c:0|t:2|false] INTEGER 2 . . . . . . . . [c:0|t:2|false] INTEGER 343470626706953435939471592052325495414338 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . . . . . [c:0|t:5|false] NULL . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.6 (countryName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'US' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10 (organizationName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt Authority X3' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-11-19 12:04:49 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-02-17 12:04:49 +0000 UTC . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'smtphost.cis.strath.ac.uk' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.1 (rsaEncryption) . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (2160 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 30379447177714699390821214414987756917017497106752752815401468298897940424121614641084965682911662061109226470045744409034694858726204402219220267706127536678472496470002656251949304539580988289607434000108276225644551387542771238005557859942721888491481059560729635518785250800733444604422205436893853887045591136243520495607942052279858109511847864640448857512910300308917438378866574043610733113695845805605139124440870086992222845736005525574876221048553508958455362202397600308373182974080791188218483915747552675045868146189706014165413363539766222128764606981961285838625400968110629310205481221084724657508131 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 65537 . . . . . . . . [c:2|t:3|true] ORAddress . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15 (keyUsage) . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (4 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (3 bits) 05a0 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.37 (extKeyUsage) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.1 (serverAuth) . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2 (clientAuth) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints) . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14 (subjectKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes) 4232425e338d6fbb603c545623d39ae573600b08 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35 (authorityKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName a84a6a63047dddbae6d139b7a64565eff3a8eca1 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (99 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://ocsp.int-x3.letsencrypt.org' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://cert.int-x3.letsencrypt.org/' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17 (subjectAltName) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (80 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'imaphost.cis.strath.ac.uk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'lists.cis.strath.ac.uk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'smtphost.cis.strath.ac.uk' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32 (certificatePolicies) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (69 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1 (Domain Validation Certificates Policy) . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.44947.1.1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.11129.2.4.2 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef007600f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016e83c3fa9700000403004730450220559abc5c4ad685137c80f30ee62e5dc760273faf5e4cf949c761df0fa6ba6eb0022100b7e66f51a67451f362e68aebe44b8ec56ec0978da5ef0e2f7a461128ecafbece007500b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016e83c3fa8f0000040300463044022077d6d2ba11fe1a66f8f8d325e96b6b678a11605043a2030aec3ee3a07bcb25b002206365a0a6670c32fc2ed08247e5694c21de91d2aa20d10ba6db4a469bbfa6a9f1 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . [c:0|t:5|false] NULL . . . . [c:0|t:3|false] BIT STRING (2048 bits) 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