DV SSL/TLS Certificate for mx.activemail.de

Certificate is witin its validity period

Issued by Let's Encrypt (R11)

About the mx.activemail.de DV SSL/TLS Certificate

This certificate with serial number 05:b1:27:c8:f0:4e:ba:a2:18:2b:f2:7d:d8:eb:4c:2c:9a:8d for mx.activemail.de 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 mx.activemail.de 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:b1:27:c8:f0:4e:ba:a2:18:2b:f2:7d:d8:eb:4c:2c:9a:8d
Serial Number (int): 495844291829030521675176304379724280142477
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 7b:10:3f:4d:6d:fa:df:05:70:15:09:ff:1d:6b:a9:34:7f:ac:82:09
Authority Key Identifier: c5:cf:46:a4:ea:f4:c3:c0:7a:6c:95:c4:2d:b0:5e:92:2f:26:e3:b9

Fingerprint (SHA-1): 6b:5e:21:2e:ad:f8:4e:6e:5e:87:85:f6:cf:e2:84:2f:d8:3c:6b:85
Fingerprint (SHA-256): 56:83:f2:14:33:ae:57:83:c4:0a:98:ab:0e:53:8f:5b:99:7c:80:19:0f:f7:2a:f0:18:a4:38:34:b3:6e:d5:c2

Issuing Certificate URL: http://r11.i.lencr.org/

Revocation Information

CRL Distribution Point: http://r11.c.lencr.org/14.crl

Check the revocation status for certificate mx.activemail.de
1
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for mx.activemail.de

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

mx.activemail.de

X.509 Certificate

The complete raw X.509 certificate details for mx.activemail.de 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 495844291829030521675176304379724280142477
 . . . . . . . . [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 'R11'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-05-25 03:21:23 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-08-23 03:21:22 +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 'mx.activemail.de'
 . . . . . . . . [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 806990016484433532057686311071297256955966697508750839054249159041694955165361945720365718238209786874294147607662742298900187189607386342461501620938572791972438218912556834486564034297013359943752843694760156430111794255129777514051475877347835153666912174821139479755317384563291220587308985406807608084658675505275271664891868744935841361423620893627205133802137564112292616029968682757781558573609915974147886174402616811229765092941102537508720848464756153232547088384161118842580529183761516692551757787593968080585044458125798492412802493963978989687079706424820525877080589322352555645180712592506904539381857650871180908159917235042578978690263375233676382004080513515382909276539441673988639060589997544975594179145831571382000107870336123346305450057487854608714120489321962703440897836185588476340685581393896676577384223055657651598480160516595321576752408293755532821143688948809782236873788447706561345646894728474298048917079390287407052575034190539432512422900677827640358398439161942355760836643919159517434999530807252129921367014984892524688869792672799922612352976809939430153841797142255412598636299666486310783501557238584061989766520893789755811660390410600489229468459361850984303769634978740155023266999131
 . . . . . . . . . . . . . . . . . . . . [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)
							7b103f4d6dfadf05701509ff1d6ba9347fac8209
 . . . . . . . . . . . . . . . . [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 c5cf46a4eaf4c3c07a6c95c42db05e922f26e3b9
 . . . . . . . . . . . . . . . . [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://r11.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 (20 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mx.activemail.de'
 . . . . . . . . . . . . . . . . [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 (39 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://r11.c.lencr.org/14.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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007600dddcca3495d7e11605e79532fac79ff83d1c50dfdb003a1412760a2cacbbc82a0000019705ab2e090000040300473045022074013862c30532b2588ead0d518850a44bccc7a8b9c2dabffaa2e3e8e9a9b7be022100a0f697cb6a011eb8a9bc75895b493cc95a04d66ae974ecca244c2508ef13a3200076000de1f2302bd30dc140621209ea552efc47747cb1d7e930ef0e421eb47e4eaa340000019705ab3d6c0000040300473045022100d2cd4207e5639a415e50ef75238bd83c0c83c7e166ac5aefdf66ff8f79cd7877022042b779e7fc0b7a0943882b5ad09910928f234368864ac3a9f0355ed358bc7451
 . . . . [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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