mail-tester.com

Issued by Let's Encrypt Authority X1

About this certificate

This digital certificate with serial number 01:50:39:7c:86:42:21:a7:64:86:78:86:1a:f9:07:b3:6d:60 was issued on by Let's Encrypt.

With 2 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=mail-tester.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 01:50:39:7c:86:42:21:a7:64:86:78:86:1a:f9:07:b3:6d:60
Serial Number (int): 114411287849087883232993782652930498981216
Serial Number lenght: 137 bits, 18 octets

SubjectKeyId: d3:9d:97:c9:13:12:7c:c3:52:78:75:98:b5:30:c6:32:30:ee:1a:28
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 1c:06:f5:e2:6c:d1:85:9e:17:d6:b8:88:2a:e0:89:98:dd:87:4e:dc
Fingerprint (sha256): e9:1d:41:43:1c:ab:1c:8b:02:88:c2:f0:04:ff:8c:fa:9e:8a:e4:ac:96:d3:85:89:25:10:27:5d:70:6c:57:b1

Issuing Certificate URL: http://cert.int-x1.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x1.letsencrypt.org/

Check the revocation status for certificate mail-tester.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for mail-tester.com

Public Key Algorithm

RSA

Key Size

4096

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

8 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

mail-tester.com
www.mail-tester.com

Other certificates including the domain name mail-tester.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for mail-tester.com in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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 114411287849087883232993782652930498981216
 . . . . . . . . [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 X1'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2016-01-29 10:13:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2016-04-28 10:13:00 +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 'mail-tester.com'
 . . . . . . . . [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 (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 954342871832932858559275041330271924889458528134175487540173354706959287389029959227366408282085279761708477056453408605166414369307998817877988888779803559486679266771716938036421470337979832297443893434432299073626114572788372823250564704939510510381207455745747831051156601111791356120481537811784006656566533537551253567889823269333134487369958299060291267508563217047010491524127203540804436728422068133251805495957455919454381076772637557200070969674964640647946493631863119672041899433521208730616996265669107994625721446085957097220544601012136575232167543327227004619723413495422067416021229697614299657929605198555371102135401896513230817779137040255267388846734563483339697285395893122000172572325382732445054294456580168763579649320433220792991267345830773865686493293647586168033452579622496330294562832646117235061847424496691166915267706196566767349015511044804308274914308547231106751547721962866224399068597212509881885234366161912869247388546930252541313257355293190638342294323309537279541557679158994311878813524746133081204775313299840822127388272685610119153758822629616499883275877255779522936631255703904031412736112587090547021590951470013304816688755885196173196461138289804988624350270436798843255531958721
 . . . . . . . . . . . . . . . . . . . . [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)
							d39d97c913127cc352787598b530c63230ee1a28
 . . . . . . . . . . . . . . . . [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 (100 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-x1.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-x1.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 (40 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail-tester.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.mail-tester.com'
 . . . . . . . . . . . . . . . . [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 (246 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 1.3.6.1.5.5.7.2.2 (unotice)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/'
 . . . . [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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