| Country | United States |
| City | Boston |
| Organization | Mimecast Services Limited |
| ISP | Mimecast North America Inc |
| ASN | AS30031 |
220 us-smtp-inbound-1.mimecast.com ESMTP; Wed, 12 Mar 2025 02:57:52 -0400 250-us-smtp-inbound-1.mimecast.com Hello [224.189.168.0] 250-STARTTLS 250 HELP
Certificate:
Data:
Version: 3 (0x2)
Serial Number:
09:e4:71:9b:d7:59:1b:44:5b:d2:26:5f:fe:ae:e6:d0
Signature Algorithm: sha256WithRSAEncryption
Issuer: C=US, O=DigiCert Inc, CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Validity
Not Before: Jan 24 00:00:00 2025 GMT
Not After : Feb 24 23:59:59 2026 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:a7:0f:23:6b:7d:dd:eb:2d:c0:dc:e8:18:8a:6b:
fd:a5:ac:d6:a1:fb:4c:6f:e0:ff:8b:63:d7:bb:a6:
61:ad:77:57:03:79:0e:a0:75:99:8c:d7:85:c3:2c:
b7:84:f7:48:99:ab:ec:f4:ea:19:8c:9d:2c:56:5a:
85:3f:97:81:5e:68:e0:7e:f0:51:2f:36:9d:0e:6c:
55:fa:95:a4:a5:7f:d4:3f:d1:9c:92:39:24:a2:45:
28:42:b6:9a:66:e8:c9:d3:b0:68:d2:39:93:5c:29:
41:13:e1:b3:94:cb:1c:fa:d1:b4:66:40:b5:b5:c6:
de:a7:2d:04:44:3e:1f:12:18:3d:fe:7f:95:07:e1:
9d:81:67:94:56:05:c7:6d:5e:82:ba:5e:b4:bd:5e:
5c:63:26:2c:dd:7d:b7:fa:85:8e:0e:66:31:5c:f7:
9e:e9:c0:0d:f1:e4:51:3c:ed:24:27:fb:57:00:6f:
02:64:18:0a:9d:21:02:c3:9f:71:d3:63:c2:21:88:
15:e3:5d:85:c2:fe:30:77:4b:92:24:c9:f1:f0:23:
6f:0a:43:9d:ab:50:df:76:db:e2:83:2f:05:fb:e1:
2e:35:c7:f8:6f:b7:a2:49:02:9b:1b:06:19:02:61:
03:bb:d4:b3:06:2f:ef:5a:3b:1d:02:5a:6c:74:41:
86:d9
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:
E3:79:60:E9:3D:27:0F:4C:66:52:C7:2A:66:18:DE:75:63:CC:5A:13
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 : 0E:57:94:BC:F3:AE:A9:3E:33:1B:2C:99:07:B3:F7:90:
DF:9B:C2:3D:71:32:25:DD:21:A9:25:AC:61:C5:4E:21
Timestamp : Jan 24 12:37:40.312 2025 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:20:42:81:91:62:78:54:99:77:21:EF:29:CC:
34:12:97:E4:F5:26:DC:6E:00:83:B3:4A:C4:63:5A:55:
C0:89:39:F8:02:21:00:CE:2B:ED:88:92:7F:CF:B0:AD:
62:D5:34:F0:BA:9C:4B:A1:6A:29:46:16:DA:02:B3:07:
2B:21:2E:0E:0A:FA:A0
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 64:11:C4:6C:A4:12:EC:A7:89:1C:A2:02:2E:00:BC:AB:
4F:28:07:D4:1E:35:27:AB:EA:FE:D5:03:C9:7D:CD:F0
Timestamp : Jan 24 12:37:40.372 2025 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:44:02:20:1E:3E:A3:C7:66:F1:B8:15:08:C4:91:53:
5A:87:C8:28:10:96:99:83:E3:B2:52:3F:1F:36:15:15:
36:27:75:03:02:20:7F:65:C9:C7:50:1C:98:2B:3B:2D:
8D:E2:F7:D3:57:D2:29:CE:E3:49:62:D8:6A:B8:24:54:
1D:83:07:CC:FC:1C
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 49:9C:9B:69:DE:1D:7C:EC:FC:36:DE:CD:87:64:A6:B8:
5B:AF:0A:87:80:19:D1:55:52:FB:E9:EB:29:DD:F8:C3
Timestamp : Jan 24 12:37:40.389 2025 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:20:01:3D:A8:68:35:62:43:77:CC:52:9D:C6:
EF:C8:BF:6C:BF:F3:D0:35:7C:71:EF:D3:DC:7B:CA:55:
19:44:5B:AA:02:21:00:E7:E1:BC:F6:63:40:B5:6F:5B:
10:5F:D0:A0:E7:D6:9C:EF:68:7E:30:30:18:68:84:FE:
99:AD:58:E2:7E:DC:A3
Signature Algorithm: sha256WithRSAEncryption
Signature Value:
87:64:b2:93:a7:7a:d6:61:44:fd:70:30:6f:44:04:1a:2f:e7:
6a:95:96:47:71:3b:dd:7e:c3:d4:81:9e:66:7d:55:b0:a6:53:
bc:b8:bd:a6:4d:cd:9e:ee:59:92:4e:84:21:cc:17:f9:f2:3d:
0e:d5:ae:a8:2f:80:42:8f:7b:c5:cc:96:be:6a:65:46:6f:22:
fb:82:3f:91:21:74:68:f7:bd:d6:a6:d0:99:d0:04:f6:31:7e:
1e:bc:99:0e:59:98:05:f4:8b:ee:39:24:ae:f6:37:e7:b7:7f:
7b:ee:79:bd:40:aa:cb:a8:3f:60:bc:e3:0c:c0:4b:74:70:85:
eb:e6:d8:9f:b7:a1:76:5c:5e:83:23:6f:07:76:0a:39:af:26:
a8:16:80:c0:45:d7:a0:75:03:42:df:95:33:d1:db:01:6a:d8:
9e:8c:8f:20:17:5d:44:a3:28:25:85:77:ca:cd:05:a5:24:d4:
8d:5e:ba:a4:00:53:1f:51:bb:61:1c:31:57:bb:89:f0:b9:6c:
03:27:c2:56:ef:57:5e:08:23:5b:37:3b:69:d3:eb:a3:0d:dc:
52:0e:d0:f0:74:6f:7a:30:d5:48:5a:3e:d3:be:0e:1a:cd:7d:
99:9a:14:79:4d:17:5a:7b:e4:bc:e9:9d:57:bc:35:96:68:27:
50:fe:ac:c2
220 us-smtp-inbound-1.mimecast.com ESMTP; Tue, 11 Mar 2025 22:19:13 -0400 250-us-smtp-inbound-1.mimecast.com Hello [224.85.254.121] 250-STARTTLS 250 HELP
Certificate:
Data:
Version: 3 (0x2)
Serial Number:
09:e4:71:9b:d7:59:1b:44:5b:d2:26:5f:fe:ae:e6:d0
Signature Algorithm: sha256WithRSAEncryption
Issuer: C=US, O=DigiCert Inc, CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Validity
Not Before: Jan 24 00:00:00 2025 GMT
Not After : Feb 24 23:59:59 2026 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:a7:0f:23:6b:7d:dd:eb:2d:c0:dc:e8:18:8a:6b:
fd:a5:ac:d6:a1:fb:4c:6f:e0:ff:8b:63:d7:bb:a6:
61:ad:77:57:03:79:0e:a0:75:99:8c:d7:85:c3:2c:
b7:84:f7:48:99:ab:ec:f4:ea:19:8c:9d:2c:56:5a:
85:3f:97:81:5e:68:e0:7e:f0:51:2f:36:9d:0e:6c:
55:fa:95:a4:a5:7f:d4:3f:d1:9c:92:39:24:a2:45:
28:42:b6:9a:66:e8:c9:d3:b0:68:d2:39:93:5c:29:
41:13:e1:b3:94:cb:1c:fa:d1:b4:66:40:b5:b5:c6:
de:a7:2d:04:44:3e:1f:12:18:3d:fe:7f:95:07:e1:
9d:81:67:94:56:05:c7:6d:5e:82:ba:5e:b4:bd:5e:
5c:63:26:2c:dd:7d:b7:fa:85:8e:0e:66:31:5c:f7:
9e:e9:c0:0d:f1:e4:51:3c:ed:24:27:fb:57:00:6f:
02:64:18:0a:9d:21:02:c3:9f:71:d3:63:c2:21:88:
15:e3:5d:85:c2:fe:30:77:4b:92:24:c9:f1:f0:23:
6f:0a:43:9d:ab:50:df:76:db:e2:83:2f:05:fb:e1:
2e:35:c7:f8:6f:b7:a2:49:02:9b:1b:06:19:02:61:
03:bb:d4:b3:06:2f:ef:5a:3b:1d:02:5a:6c:74:41:
86:d9
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:
E3:79:60:E9:3D:27:0F:4C:66:52:C7:2A:66:18:DE:75:63:CC:5A:13
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 : 0E:57:94:BC:F3:AE:A9:3E:33:1B:2C:99:07:B3:F7:90:
DF:9B:C2:3D:71:32:25:DD:21:A9:25:AC:61:C5:4E:21
Timestamp : Jan 24 12:37:40.312 2025 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:20:42:81:91:62:78:54:99:77:21:EF:29:CC:
34:12:97:E4:F5:26:DC:6E:00:83:B3:4A:C4:63:5A:55:
C0:89:39:F8:02:21:00:CE:2B:ED:88:92:7F:CF:B0:AD:
62:D5:34:F0:BA:9C:4B:A1:6A:29:46:16:DA:02:B3:07:
2B:21:2E:0E:0A:FA:A0
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 64:11:C4:6C:A4:12:EC:A7:89:1C:A2:02:2E:00:BC:AB:
4F:28:07:D4:1E:35:27:AB:EA:FE:D5:03:C9:7D:CD:F0
Timestamp : Jan 24 12:37:40.372 2025 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:44:02:20:1E:3E:A3:C7:66:F1:B8:15:08:C4:91:53:
5A:87:C8:28:10:96:99:83:E3:B2:52:3F:1F:36:15:15:
36:27:75:03:02:20:7F:65:C9:C7:50:1C:98:2B:3B:2D:
8D:E2:F7:D3:57:D2:29:CE:E3:49:62:D8:6A:B8:24:54:
1D:83:07:CC:FC:1C
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 49:9C:9B:69:DE:1D:7C:EC:FC:36:DE:CD:87:64:A6:B8:
5B:AF:0A:87:80:19:D1:55:52:FB:E9:EB:29:DD:F8:C3
Timestamp : Jan 24 12:37:40.389 2025 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:20:01:3D:A8:68:35:62:43:77:CC:52:9D:C6:
EF:C8:BF:6C:BF:F3:D0:35:7C:71:EF:D3:DC:7B:CA:55:
19:44:5B:AA:02:21:00:E7:E1:BC:F6:63:40:B5:6F:5B:
10:5F:D0:A0:E7:D6:9C:EF:68:7E:30:30:18:68:84:FE:
99:AD:58:E2:7E:DC:A3
Signature Algorithm: sha256WithRSAEncryption
Signature Value:
87:64:b2:93:a7:7a:d6:61:44:fd:70:30:6f:44:04:1a:2f:e7:
6a:95:96:47:71:3b:dd:7e:c3:d4:81:9e:66:7d:55:b0:a6:53:
bc:b8:bd:a6:4d:cd:9e:ee:59:92:4e:84:21:cc:17:f9:f2:3d:
0e:d5:ae:a8:2f:80:42:8f:7b:c5:cc:96:be:6a:65:46:6f:22:
fb:82:3f:91:21:74:68:f7:bd:d6:a6:d0:99:d0:04:f6:31:7e:
1e:bc:99:0e:59:98:05:f4:8b:ee:39:24:ae:f6:37:e7:b7:7f:
7b:ee:79:bd:40:aa:cb:a8:3f:60:bc:e3:0c:c0:4b:74:70:85:
eb:e6:d8:9f:b7:a1:76:5c:5e:83:23:6f:07:76:0a:39:af:26:
a8:16:80:c0:45:d7:a0:75:03:42:df:95:33:d1:db:01:6a:d8:
9e:8c:8f:20:17:5d:44:a3:28:25:85:77:ca:cd:05:a5:24:d4:
8d:5e:ba:a4:00:53:1f:51:bb:61:1c:31:57:bb:89:f0:b9:6c:
03:27:c2:56:ef:57:5e:08:23:5b:37:3b:69:d3:eb:a3:0d:dc:
52:0e:d0:f0:74:6f:7a:30:d5:48:5a:3e:d3:be:0e:1a:cd:7d:
99:9a:14:79:4d:17:5a:7b:e4:bc:e9:9d:57:bc:35:96:68:27:
50:fe:ac:c2