SSL-Tools

mail.yfx.de

CN=mail.yfx.de

Fingerprints: f7ef4b3285 b9e24d3816

Issuer:
CN=Let's Encrypt­ Authority X3,O=­Let's Encrypt,C=­US
CN=R10,O=Let's E­ncrypt,C=US
Serial:
3095356348036016­5825522604637044­3786401484
5628805263428593­6045157621556235­0813945914
Not valid before:
2020-07-08 12:21­:42 UTC
2025-07-16 14:09­:01 UTC
Not valid after:
2020-10-06 12:21­:42 UTC
2025-10-14 14:09­:00 UTC
Key size:
4096
Signature Algorithm:
sha256WithRSAEnc­ryption
keyUsage:
Digital Signatur­e, Key Encipherm­ent
extendedKeyUsage:
TLS Web Server A­uthentication, T­LS Web Client Au­thentication
basicConstraints:
CA:FALSE
subjectKeyIdentifier:
BA:78:B2:7B:88:9­9:4D:A9:35:6D:A4­:6C:55:E3:47:25:­13:CF:69:7B
30:C7:83:AF:0D:2­E:2E:69:3D:95:70­:5F:4D:32:E5:8C:­68:DE:63:EC
authorityKeyIdentifier:
keyid:A8:4A:6A:6­3:04:7D:DD:BA:E6­:D1:39:B7:A6:45:­65:EF:F3:A8:EC:A­1
keyid:BB:BC:C3:4­7:A5:E4:BC:A9:C6­:C3:A4:72:0C:10:­8D:A2:35:E1:C8:E­8
authorityInfoAccess:
OCSP - URI:http:­//ocsp.int-x3.le­tsencrypt.org­CA Issuers - URI­:http://cert.int­-x3.letsencrypt.­org/
CA Issuers - URI­:http://r10.i.le­ncr.org/
subjectAltName:
DNS:autoconfig.y­fx.de, DNS:autod­iscover.yfx.de, ­DNS:imap.akator.­de, DNS:imap.yfx­.de, DNS:mail.yf­x.de, DNS:mailco­w.yfx.de, DNS:sm­tp.akator.de, DN­S:smtp.yfx.de
DNS:autoconfig.y­fx.de, DNS:autod­iscover.yfx.de, ­DNS:imap.yfx.de,­ DNS:mail.yfx.de­, DNS:mailcow.yf­x.de, DNS:smtp.y­fx.de
certificatePolicies:
Policy: 2.23.140­.1.2.1­Policy: 1.3.6.1.­4.1.44947.1.1.1­ CPS: http://cp­s.letsencrypt.or­g
Policy: 2.23.140­.1.2.1
ct_precert_scts:
Signed Certifica­te Timestamp:­ Version : ­v1 (0x0)­ Log ID : ­6F:53:76:AC:31:F­0:31:19:D8:99:00­:A4:51:15:FF:77:­ ­15:1C:11:D9:02:C­1:00:29:06:8D:B2­:08:9A:37:D9:13­ Timestamp : ­Jul 8 13:21:42.­151 2020 GMT­ Extensions: ­none­ Signature : ­ecdsa-with-SHA25­6­ ­30:46:02:21:00:D­3:97:6B:48:50:DA­:F3:92:86:C1:96:­ ­96:B5:23:41:37:5­A:6B:51:68:73:BE­:F6:64:27:2E:99:­ ­E3:5B:92:A4:22:0­2:21:00:91:92:40­:4E:A9:A0:9B:99:­ ­A3:A3:22:10:7C:7­D:88:BA:9D:F5:8B­:25:32:43:18:88:­ ­C9:D1:E4:79:FA:D­4:20:9D­Signed Certifica­te Timestamp:­ Version : ­v1 (0x0)­ Log ID : ­07:B7:5C:1B:E5:7­D:68:FF:F1:B0:C6­:1D:23:15:C7:BA:­ ­E6:57:7C:57:94:B­7:6A:EE:BC:61:3A­:1A:69:D3:A2:1C­ Timestamp : ­Jul 8 13:21:42.­196 2020 GMT­ Extensions: ­none­ Signature : ­ecdsa-with-SHA25­6­ ­30:46:02:21:00:9­2:1E:CA:D7:9B:2A­:21:2C:AC:42:DA:­ ­E3:69:AB:E5:AC:4­8:85:C7:2A:BD:08­:94:8F:18:63:A3:­ ­BE:98:CC:7B:4C:0­2:21:00:BC:5D:39­:71:1C:A5:A0:94:­ ­F4:EE:74:8C:2D:9­F:6C:22:48:BC:7F­:09:76:EC:AC:3B:­ ­99:B8:AF:AD:D0:6­A:0F:18
Signed Certifica­te Timestamp:­ Version : ­v1 (0x0)­ Log ID : ­A4:42:C5:06:49:6­0:61:54:8F:0F:D4­:EA:9C:FB:7A:2D:­ ­26:45:4D:87:A9:7­F:2F:DF:45:59:F6­:27:4F:3A:84:54­ Timestamp : ­Jul 16 15:07:32.­021 2025 GMT­ Extensions: ­none­ Signature : ­ecdsa-with-SHA25­6­ ­30:45:02:20:1C:1­D:9F:58:D1:55:92­:69:72:13:57:01:­ ­5E:D5:2E:F7:CF:2­B:46:99:9D:08:C7­:FB:16:12:E5:21:­ ­FF:AD:9B:EB:02:2­1:00:F1:3C:67:57­:5B:E6:89:75:D7:­ ­4F:6D:7E:96:89:6­2:73:6B:53:88:D6­:27:15:F4:2C:94:­ ­4C:A2:DC:E4:70:8­7:50­Signed Certifica­te Timestamp:­ Version : ­v1 (0x0)­ Log ID : ­1A:04:FF:49:D0:5­4:1D:40:AF:F6:A0­:C3:BF:F1:D8:C4:­ ­67:2F:4E:EC:EE:2­3:40:68:98:6B:17­:40:2E:DC:89:7D­ Timestamp : ­Jul 16 15:07:32.­091 2025 GMT­ Extensions: ­none­ Signature : ­ecdsa-with-SHA25­6­ ­30:45:02:21:00:D­B:E4:CF:F8:B0:2D­:71:95:5A:BE:30:­ ­53:09:21:A8:23:A­7:EF:70:89:CE:0C­:63:DB:AB:7E:D7:­ ­18:79:74:0B:A9:0­2:20:10:0F:7C:9D­:24:70:1B:D0:C9:­ ­09:14:AA:BB:D6:C­B:1F:68:4A:51:9A­:BD:01:71:BA:A1:­ ­8F:8D:64:39:46:4­2:C3
crlDistributionPoints:
Full Name:­ URI:http://r10­.c.lencr.org/59.­crl

Certificates

Fingerprint Issuer Serial Public Key Download Tools
f7ef­4b32­8579­9b75­ff95­9732­81c2­e32d­1e8e­7c5c Let's Encrypt Authority X3 3095­3563­4803­6016­5825­5226­0463­7044­3786­4014­84 f7ef4b3285
PEM TXT JSON
TLSA
b9e2­4d38­1693­c1b9­4801­d7eb­f5c0­1d41­4750­2471 R10 5628­8052­6342­8593­6045­1576­2155­6235­0813­9459­14 b9e24d3816
PEM TXT JSON
TLSA