DV SSL/TLS Certificate for mail.leenux.fr

Certificate is witin its validity period

Issued by Let's Encrypt (R10)

About the mail.leenux.fr DV SSL/TLS Certificate

This certificate with serial number 05:bd:63:f1:b9:a1:23:aa:99:5d:a6:2e:7f:28:11:1b:bd:80 for mail.leenux.fr was issued on by Let's Encrypt.

This DV SSL/TLS Certificate is currently within its validity period but we haven't checked the revocation status of this certificate, you can do this simply on revocationcheck.com. We have found some issues with the compliance of this certificate, they are be shown below. We hope this DV SSL/TLS Certificate review for mail.leenux.fr provides you with the detailed information you were looking for.


We have identified some issues with this certificate:
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Let's Encrypt

Organization: Let's Encrypt
Country: US

This X.509 certificate will expire on

Certificate Details

Serial Number (hex): 05:bd:63:f1:b9:a1:23:aa:99:5d:a6:2e:7f:28:11:1b:bd:80
Serial Number (int): 500007645686996765449911513139197723262336
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: ad:cf:f7:65:1f:f1:d8:51:fd:87:87:3a:a0:ad:a2:ce:3f:78:96:33
Authority Key Identifier: bb:bc:c3:47:a5:e4:bc:a9:c6:c3:a4:72:0c:10:8d:a2:35:e1:c8:e8

Fingerprint (SHA-1): a8:0f:b9:a9:fb:ea:f3:15:f0:48:41:7b:e7:00:75:17:e0:01:e3:69
Fingerprint (SHA-256): d6:46:1a:d6:20:26:85:31:59:23:d6:36:7c:8f:51:a8:74:39:da:c7:9d:e7:d4:02:a3:d0:58:8c:5a:ba:a5:dc

Issuing Certificate URL: http://r10.i.lencr.org/

Revocation Information

CRL Distribution Point: http://r10.c.lencr.org/1.crl

Check the revocation status for certificate mail.leenux.fr
1
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for mail.leenux.fr

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
10
CA Certificate
This is not a CA certificate

Subject Alternative Names

mail.leenux.fr

X.509 Certificate

The complete raw X.509 certificate details for mail.leenux.fr 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 500007645686996765449911513139197723262336
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R10'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-05-20 06:20:45 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-08-18 06:20:44 +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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'mail.leenux.fr'
 . . . . . . . . [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
 . . . . . . . . . . . . . . . . [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 683554700420553629931515780703768180491398406183597764330375418498293815620879738815332045661800101187052026190045812784687247100189470332875236791815590903562945331156854067453121660803712754887395669760797172875857527926279252627213731217699414938972491146756564429878413037298917914135078334853231696808065560624944759021695075161660047831102907158229980433332932617718617764212403296841893234828488876977969941043608204904864859991977524052804477617039802227812465787789432871818824492353642063506888145714256979592335409957333397348748082963821788028754285679792154308205388436380877030082809138265140909311981319807845381476608315093997669013355448190133023928051321132060546708202804291272563302226847822763558270794051993710303268740717858295388561732025472681144331330733989649438334994641791855386780944482707706845907337808232672620591066618972846401339810563016375887121841008601243611662774358104422206024554556815847348925589171952997816170894898311674364185036004908904782870344754124922040431862628421845920401133144437286443695711171506597498154606787005285241156769722688682214335541339697427183174412638434982375876340380906323490585754860248020590512428845274037803429628127252606876283750965715921744926772768999
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							adcff7651ff1d851fd87873aa0ada2ce3f789633
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName bbbcc347a5e4bca9c6c3a4720c108da235e1c8e8
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (39 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r10.i.lencr.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (18 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.leenux.fr'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (12 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
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.31
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (38 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r10.c.lencr.org/1.crl'
 . . . . . . . . . . . . . . . . [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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee007500a442c506496061548f0fd4ea9cfb7a2d26454d87a97f2fdf4559f6274f3a845400000196ec8f9825000004030046304402207afcf957acbc651aec2e801a3f223bd9f2c887e3c67080c4285c8964be0a0faf02200aa7b73d64906e706b378f811f2ad6d00d025fe14fabeac5d4b491deff97e97400750012f14e34bd53724c840619c38f3f7a13f8e7b56287889c6d300584ebe586263a00000196ec8f9831000004030046304402204f07c8c460e43eb0bb699e7030012bebb35e8f8f1d5be70370fb67d2e0d4696002205c48bb2da9a8ff8e6d843d56ae3c13c5b111067e5c2d00e649d445ad943fa61b
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . [c:0|t:5|false] NULL []
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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