SSL-Tools

SSL check results of securemail.a1.net

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Discover if the mail servers for securemail.a1.net can be reached through a secure connection.

To establish a secure connection a mail server has to offer STARTTLS (SSL), a trustworthy SSL certificate, support for the Diffie-Hellman-Algorithm to guarantee Perfect Forward Secrecy and must not be vulnerable against the Heartbleed attack. Futhermore we recommend using end-to-end encryption with GnuPG.

Summary

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Report created Wed, 08 Apr 2026 14:53:05 +0000

The mailservers of securemail.a1.net can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @securemail.a1.net addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
securemail.a1.net
80.75.42.226
 -
supported
securemail.a1.net
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
2 s

Outgoing Mails

We have not received any emails from a @securemail.a1.net address so far. Test mail delivery

Certificates

First seen at:

CN=securemail.a1.net,O=A1 Telekom Austria AG,L=Wien,C=AT

Certificate chain
Subject
Country (C)
  • AT
Locality (L)
  • Wien
Organization (O)
  • A1 Telekom Austria AG
Common Name (CN)
  • securemail.a1.net
Alternative Names
  • securemail.a1.net
  • smtp.a1.net
  • email.aon.at
  • pop.a1.net
  • pop3.a1.net
  • imap.a1.net
  • imap4.a1.net
  • mmp.a1.net
  • mailbox.aon.at
  • smail.a1.net
  • mx20.aon.at
  • smx01.a1.net
  • mx10.aon.at
Issuer
Country (C)
  • US
Organization (O)
  • DigiCert Inc
Organizational Unit (OU)
  • www.digicert.com
Common Name (CN)
  • GeoTrust TLS RSA CA G1
validity period
Not valid before
2026-03-16
Not valid after
2026-09-30
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
Fingerprints
SHA256
AD:BB:1E:14:4E:5A:BA:24:49:C1:F0:69:D4:11:5C:09:00:CD:07:81:A9:BE:D0:15:21:D5:57:3E:4D:21:C3:5D
SHA1
5F:01:73:BC:14:63:79:48:A1:5C:60:E3:10:9F:50:2F:FF:E9:CF:44
X509v3 extensions
authorityKeyIdentifier
  • keyid:94:4F:D4:5D:8B:E4:A4:E2:A6:80:FE:FD:D8:F9:00:EF:A3:BE:02:57
subjectKeyIdentifier
  • 87:6B:9D:DE:0F:EB:A0:7D:49:B0:2F:6E:14:96:D3:D6:91:14:5A:0D
certificatePolicies
  • Policy: 2.23.140.1.2.2
  • CPS: http://www.digicert.com/CPS
crlDistributionPoints
  • Full Name:
  • URI:http://cdp.geotrust.com/GeoTrustTLSRSACAG1.crl
authorityInfoAccess
  • OCSP - URI:http://status.geotrust.com
  • CA Issuers - URI:http://cacerts.geotrust.com/GeoTrustTLSRSACAG1.crt
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : C2:31:7E:57:45:19:A3:45:EE:7F:38:DE:B2:90:41:EB:
  • C7:C2:21:5A:22:BF:7F:D5:B5:AD:76:9A:D9:0E:52:CD
  • Timestamp : Mar 16 07:11:31.218 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:17:65:65:4E:AA:32:ED:DF:2C:53:94:09:
  • E4:E2:6C:09:9B:6F:03:0B:72:82:B4:3B:11:3C:BB:26:
  • 23:EE:43:E4:02:20:4B:B5:84:13:D1:3E:06:9D:73:56:
  • 28:D2:B2:A5:A3:FC:5F:53:BD:50:8D:A8:AD:47:3A:45:
  • 5C:94:0A:40:7A:42
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : D7:6D:7D:10:D1:A7:F5:77:C2:C7:E9:5F:D7:00:BF:F9:
  • 82:C9:33:5A:65:E1:D0:B3:01:73:17:C0:C8:C5:69:77
  • Timestamp : Mar 16 07:11:31.178 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:4F:56:55:63:53:98:C4:B6:3E:EC:01:63:
  • 95:6C:CF:56:D8:8D:C2:25:0F:1D:A3:8E:1D:00:3E:DA:
  • AC:93:CA:E8:02:21:00:9B:B7:6A:68:ED:58:9C:EA:53:
  • 9E:49:AF:BC:18:3D:C6:D9:EE:9D:34:32:D2:5D:B3:05:
  • B7:F3:56:64:25:06:09
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 94:4E:43:87:FA:EC:C1:EF:81:F3:19:24:26:A8:18:65:
  • 01:C7:D3:5F:38:02:01:3F:72:67:7D:55:37:2E:19:D8
  • Timestamp : Mar 16 07:11:31.234 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:3F:9D:D4:59:1F:C6:AD:22:4D:FA:67:EE:
  • 93:01:3D:C9:40:A4:FE:C5:F7:3B:43:16:00:0A:05:76:
  • 68:E6:42:A0:02:21:00:F3:D7:34:69:D3:3B:53:7A:C5:
  • 53:E5:33:45:AD:55:9E:44:B6:AA:C2:98:11:7E:9B:96:
  • 52:85:A9:D0:20:A6:44