| Hostnames |
us-smtp-o365-outbound-1.mimecast.com us-smtp-o365-outbound-2.mimecast.com |
| Domains | mimecast.com |
| Country | United States |
| City | Boston |
| Organization | CenturyLink Communications, LLC |
| ISP | Mimecast North America Inc |
| ASN | AS30031 |
1831546324 | 2025-01-13T02:57:31.11378125 / tcp
220 us-smtp-o365-outbound-1.mimecast.com ESMTP; Sun, 12 Jan 2025 21:57:18 -0500 250-us-smtp-o365-outbound-1.mimecast.com Hello [224.64.144.221] 250-STARTTLS 250 HELP
Certificate:
Data:
Version: 3 (0x2)
Serial Number:
07:d3:99:ee:c1:e2:62:a5:60:59:d9:6f:67:56:17:5a
Signature Algorithm: sha256WithRSAEncryption
Issuer: C=US, O=DigiCert Inc, CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Validity
Not Before: Jan 30 00:00:00 2024 GMT
Not After : Feb 25 23:59:59 2025 GMT
Subject: C=GB, L=London, O=Mimecast Services Limited, CN=*.mimecast.com
Subject Public Key Info:
Public Key Algorithm: rsaEncryption
Public-Key: (2048 bit)
Modulus:
00:ad:75:db:1a:0b:50:42:ae:df:bb:4f:38:0e:3d:
f2:e4:6b:11:b9:bf:c7:5b:64:19:52:41:a3:46:e4:
e2:f8:e5:05:5e:ee:fa:f1:58:b5:8f:3b:ea:8f:12:
17:32:4b:28:cd:5e:f5:d9:dc:b5:66:0b:a2:2a:7f:
fa:3d:b3:1b:f9:bd:e3:b1:3b:c7:62:d2:95:7d:dd:
75:5c:eb:b2:85:d8:4f:0c:e6:3f:85:ae:37:db:cd:
bc:80:e1:bf:d7:e8:36:f2:ac:04:36:88:09:d3:89:
33:28:df:60:09:ad:d9:ed:fa:1a:e9:7d:fa:e9:a6:
99:f2:89:9b:04:eb:e3:49:3b:17:f0:4b:71:91:47:
32:78:2a:2b:2e:6c:51:3f:18:06:35:93:f4:e2:18:
69:02:51:d0:81:ed:34:16:42:7b:db:5f:e1:12:e0:
c2:d1:24:e5:45:e6:21:59:3f:ba:56:aa:2a:54:32:
e2:25:d6:0d:29:d4:91:18:e6:ca:41:11:ac:d5:f8:
2b:2f:e5:58:08:44:3f:8b:13:c0:e4:2b:77:a6:9f:
4e:63:fd:3f:39:c1:4d:da:73:95:b9:b0:1d:aa:83:
3d:69:a3:e2:65:71:92:d3:f2:d8:aa:b2:5c:75:28:
53:77:b2:d0:48:b0:d7:63:c7:ee:32:39:cb:a4:c1:
3a:03
Exponent: 65537 (0x10001)
X509v3 extensions:
X509v3 Authority Key Identifier:
74:85:80:C0:66:C7:DF:37:DE:CF:BD:29:37:AA:03:1D:BE:ED:CD:17
X509v3 Subject Key Identifier:
7B:AD:52:F3:F0:0F:DF:C8:AB:89:89:6E:1B:8A:B2:CE:87:0A:A9:92
X509v3 Subject Alternative Name:
DNS:*.mimecast.com
X509v3 Certificate Policies:
Policy: 2.23.140.1.2.2
CPS: http://www.digicert.com/CPS
X509v3 Key Usage: critical
Digital Signature, Key Encipherment
X509v3 Extended Key Usage:
TLS Web Server Authentication, TLS Web Client Authentication
X509v3 CRL Distribution Points:
Full Name:
URI:http://crl3.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl
Full Name:
URI:http://crl4.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl
Authority Information Access:
OCSP - URI:http://ocsp.digicert.com
CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crt
X509v3 Basic Constraints: critical
CA:FALSE
CT Precertificate SCTs:
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 4E:75:A3:27:5C:9A:10:C3:38:5B:6C:D4:DF:3F:52:EB:
1D:F0:E0:8E:1B:8D:69:C0:B1:FA:64:B1:62:9A:39:DF
Timestamp : Jan 30 15:09:07.583 2024 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:46:02:21:00:EF:78:AC:5C:03:B3:F4:EC:56:AB:10:
11:7D:5B:18:16:26:20:47:EA:74:50:30:69:F0:8B:98:
49:6F:A4:51:65:02:21:00:B0:75:64:6E:0D:02:4B:A2:
63:B3:6B:A6:02:0F:07:DD:E7:FA:2C:93:6D:B2:31:C4:
32:9A:F9:E9:FF:8D:0D:6D
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 7D:59:1E:12:E1:78:2A:7B:1C:61:67:7C:5E:FD:F8:D0:
87:5C:14:A0:4E:95:9E:B9:03:2F:D9:0E:8C:2E:79:B8
Timestamp : Jan 30 15:09:07.642 2024 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:20:15:84:BB:A7:7C:7D:40:84:17:37:DE:1F:
AC:AF:40:6B:F1:92:C6:DA:1C:16:F1:0D:5E:A3:DF:72:
3A:D9:F0:9A:02:21:00:DC:08:CC:4D:38:83:9E:E5:F4:
97:CD:E8:AA:41:0B:33:98:C0:57:5A:0A:6A:C2:79:55:
6E:00:62:2F:0E:89:A9
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : E6:D2:31:63:40:77:8C:C1:10:41:06:D7:71:B9:CE:C1:
D2:40:F6:96:84:86:FB:BA:87:32:1D:FD:1E:37:8E:50
Timestamp : Jan 30 15:09:07.677 2024 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:21:00:E1:68:47:C9:70:B0:FF:56:92:6C:17:
FD:0A:7D:07:C9:B1:15:FE:89:90:AD:95:FF:62:5A:A7:
89:58:25:70:49:02:20:17:49:40:21:E5:4B:FE:18:25:
3B:62:54:68:86:4D:FB:4E:18:FD:FA:EF:DA:9F:F8:AF:
9F:EC:17:F9:4C:B0:2A
Signature Algorithm: sha256WithRSAEncryption
Signature Value:
35:0b:f0:a8:ea:d6:17:c1:8f:4c:55:6f:d8:ac:11:74:8f:cb:
97:36:4f:e3:07:43:e4:36:32:fc:c8:f5:45:68:09:1c:41:1d:
8f:23:1e:77:3e:f9:e0:d3:43:b6:ac:d9:b3:08:c2:8e:e3:51:
19:f6:1a:01:6d:2a:38:9e:3b:58:9f:ed:c5:3d:9d:04:d0:ed:
81:1f:c6:3a:9c:9f:37:46:dc:27:27:01:56:48:51:97:f3:b5:
c0:00:13:25:a4:a3:fe:f8:fe:0f:c4:35:e7:e4:1c:0f:5e:f5:
33:81:67:85:ff:c5:13:83:08:3f:90:cd:ce:08:74:48:bf:50:
da:ac:3b:92:e5:ca:52:5d:66:df:5b:71:91:32:74:31:6d:28:
0e:e6:d1:c3:a0:54:72:e6:7c:39:3f:fa:2f:9d:e3:fe:ec:58:
e6:7c:ae:8b:3e:b9:fe:e0:cb:41:b1:b5:7a:34:3d:bd:66:0d:
1d:ee:53:41:40:85:2a:bd:21:d8:7e:7b:d6:44:72:8c:73:af:
18:7e:7e:52:d5:24:26:de:09:f0:c1:7f:a4:67:d2:ce:87:ef:
5e:b7:32:c5:e2:55:ee:71:66:2b:0b:85:3d:7c:e9:0a:93:4b:
05:be:d7:7c:2e:f3:62:4e:94:66:01:91:4c:0f:b1:97:30:b4:
6c:97:18:e1
23510244 | 2025-01-18T21:49:09.243530587 / tcp
220 us-smtp-o365-outbound-1.mimecast.com ESMTP; Sat, 18 Jan 2025 16:48:46 -0500 250-us-smtp-o365-outbound-1.mimecast.com Hello [224.170.29.31] 250-STARTTLS 250 HELP
Certificate:
Data:
Version: 3 (0x2)
Serial Number:
07:d3:99:ee:c1:e2:62:a5:60:59:d9:6f:67:56:17:5a
Signature Algorithm: sha256WithRSAEncryption
Issuer: C=US, O=DigiCert Inc, CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Validity
Not Before: Jan 30 00:00:00 2024 GMT
Not After : Feb 25 23:59:59 2025 GMT
Subject: C=GB, L=London, O=Mimecast Services Limited, CN=*.mimecast.com
Subject Public Key Info:
Public Key Algorithm: rsaEncryption
Public-Key: (2048 bit)
Modulus:
00:ad:75:db:1a:0b:50:42:ae:df:bb:4f:38:0e:3d:
f2:e4:6b:11:b9:bf:c7:5b:64:19:52:41:a3:46:e4:
e2:f8:e5:05:5e:ee:fa:f1:58:b5:8f:3b:ea:8f:12:
17:32:4b:28:cd:5e:f5:d9:dc:b5:66:0b:a2:2a:7f:
fa:3d:b3:1b:f9:bd:e3:b1:3b:c7:62:d2:95:7d:dd:
75:5c:eb:b2:85:d8:4f:0c:e6:3f:85:ae:37:db:cd:
bc:80:e1:bf:d7:e8:36:f2:ac:04:36:88:09:d3:89:
33:28:df:60:09:ad:d9:ed:fa:1a:e9:7d:fa:e9:a6:
99:f2:89:9b:04:eb:e3:49:3b:17:f0:4b:71:91:47:
32:78:2a:2b:2e:6c:51:3f:18:06:35:93:f4:e2:18:
69:02:51:d0:81:ed:34:16:42:7b:db:5f:e1:12:e0:
c2:d1:24:e5:45:e6:21:59:3f:ba:56:aa:2a:54:32:
e2:25:d6:0d:29:d4:91:18:e6:ca:41:11:ac:d5:f8:
2b:2f:e5:58:08:44:3f:8b:13:c0:e4:2b:77:a6:9f:
4e:63:fd:3f:39:c1:4d:da:73:95:b9:b0:1d:aa:83:
3d:69:a3:e2:65:71:92:d3:f2:d8:aa:b2:5c:75:28:
53:77:b2:d0:48:b0:d7:63:c7:ee:32:39:cb:a4:c1:
3a:03
Exponent: 65537 (0x10001)
X509v3 extensions:
X509v3 Authority Key Identifier:
74:85:80:C0:66:C7:DF:37:DE:CF:BD:29:37:AA:03:1D:BE:ED:CD:17
X509v3 Subject Key Identifier:
7B:AD:52:F3:F0:0F:DF:C8:AB:89:89:6E:1B:8A:B2:CE:87:0A:A9:92
X509v3 Subject Alternative Name:
DNS:*.mimecast.com
X509v3 Certificate Policies:
Policy: 2.23.140.1.2.2
CPS: http://www.digicert.com/CPS
X509v3 Key Usage: critical
Digital Signature, Key Encipherment
X509v3 Extended Key Usage:
TLS Web Server Authentication, TLS Web Client Authentication
X509v3 CRL Distribution Points:
Full Name:
URI:http://crl3.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl
Full Name:
URI:http://crl4.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl
Authority Information Access:
OCSP - URI:http://ocsp.digicert.com
CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crt
X509v3 Basic Constraints: critical
CA:FALSE
CT Precertificate SCTs:
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 4E:75:A3:27:5C:9A:10:C3:38:5B:6C:D4:DF:3F:52:EB:
1D:F0:E0:8E:1B:8D:69:C0:B1:FA:64:B1:62:9A:39:DF
Timestamp : Jan 30 15:09:07.583 2024 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:46:02:21:00:EF:78:AC:5C:03:B3:F4:EC:56:AB:10:
11:7D:5B:18:16:26:20:47:EA:74:50:30:69:F0:8B:98:
49:6F:A4:51:65:02:21:00:B0:75:64:6E:0D:02:4B:A2:
63:B3:6B:A6:02:0F:07:DD:E7:FA:2C:93:6D:B2:31:C4:
32:9A:F9:E9:FF:8D:0D:6D
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 7D:59:1E:12:E1:78:2A:7B:1C:61:67:7C:5E:FD:F8:D0:
87:5C:14:A0:4E:95:9E:B9:03:2F:D9:0E:8C:2E:79:B8
Timestamp : Jan 30 15:09:07.642 2024 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:20:15:84:BB:A7:7C:7D:40:84:17:37:DE:1F:
AC:AF:40:6B:F1:92:C6:DA:1C:16:F1:0D:5E:A3:DF:72:
3A:D9:F0:9A:02:21:00:DC:08:CC:4D:38:83:9E:E5:F4:
97:CD:E8:AA:41:0B:33:98:C0:57:5A:0A:6A:C2:79:55:
6E:00:62:2F:0E:89:A9
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : E6:D2:31:63:40:77:8C:C1:10:41:06:D7:71:B9:CE:C1:
D2:40:F6:96:84:86:FB:BA:87:32:1D:FD:1E:37:8E:50
Timestamp : Jan 30 15:09:07.677 2024 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:21:00:E1:68:47:C9:70:B0:FF:56:92:6C:17:
FD:0A:7D:07:C9:B1:15:FE:89:90:AD:95:FF:62:5A:A7:
89:58:25:70:49:02:20:17:49:40:21:E5:4B:FE:18:25:
3B:62:54:68:86:4D:FB:4E:18:FD:FA:EF:DA:9F:F8:AF:
9F:EC:17:F9:4C:B0:2A
Signature Algorithm: sha256WithRSAEncryption
Signature Value:
35:0b:f0:a8:ea:d6:17:c1:8f:4c:55:6f:d8:ac:11:74:8f:cb:
97:36:4f:e3:07:43:e4:36:32:fc:c8:f5:45:68:09:1c:41:1d:
8f:23:1e:77:3e:f9:e0:d3:43:b6:ac:d9:b3:08:c2:8e:e3:51:
19:f6:1a:01:6d:2a:38:9e:3b:58:9f:ed:c5:3d:9d:04:d0:ed:
81:1f:c6:3a:9c:9f:37:46:dc:27:27:01:56:48:51:97:f3:b5:
c0:00:13:25:a4:a3:fe:f8:fe:0f:c4:35:e7:e4:1c:0f:5e:f5:
33:81:67:85:ff:c5:13:83:08:3f:90:cd:ce:08:74:48:bf:50:
da:ac:3b:92:e5:ca:52:5d:66:df:5b:71:91:32:74:31:6d:28:
0e:e6:d1:c3:a0:54:72:e6:7c:39:3f:fa:2f:9d:e3:fe:ec:58:
e6:7c:ae:8b:3e:b9:fe:e0:cb:41:b1:b5:7a:34:3d:bd:66:0d:
1d:ee:53:41:40:85:2a:bd:21:d8:7e:7b:d6:44:72:8c:73:af:
18:7e:7e:52:d5:24:26:de:09:f0:c1:7f:a4:67:d2:ce:87:ef:
5e:b7:32:c5:e2:55:ee:71:66:2b:0b:85:3d:7c:e9:0a:93:4b:
05:be:d7:7c:2e:f3:62:4e:94:66:01:91:4c:0f:b1:97:30:b4:
6c:97:18:e1