SSL-Tools

SSL check results of mail.altstu.ru

NEW You can also bulk check multiple servers.

Discover if the mail servers for mail.altstu.ru 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 Tue, 13 Apr 2021 09:54:07 +0000

We can not guarantee a secure connection to the mailservers of mail.altstu.ru!

Please contact the operator of mail.altstu.ru and ask him or her to solve this problem. This result stays accessible under the following address:

/mailservers/mail.altstu.ru

Servers

Incoming Mails

These servers are responsible for incoming mails to @mail.altstu.ru addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.altstu.ru
193.19.126.57
 10
supported
mail.altstu.ru
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
supported
  • SSL_RSA_WITH_RC4_128_SHA
  • SSL_RSA_EXPORT_WITH_RC4_40_MD5
  • TLSv1.0
  • SSLv3
5 s
relay.altstu.ru
193.19.126.55
Results incomplete
20
unsupported
not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
1 s

Outgoing Mails

We have not received any emails from a @mail.altstu.ru address so far. Test mail delivery

Certificates

First seen at:

emailAddress=postmaster@mail.altstu.ru,CN=mail.altstu.ru,OU=AltSTU SSL key,O=AltSTU Mail Server,L=Barnaul,ST=AL,C=RU

Certificate chain
  • mail.altstu.ru (Certificate is self-signed.)
    • remaining
    • 4096 bit
    • md5WithRSAEncryption
    • Unknown Authority
Subject
Country (C)
  • RU
State (ST)
  • AL
Locality (L)
  • Barnaul
Organization (O)
  • AltSTU Mail Server
Organizational Unit (OU)
  • AltSTU SSL key
Common Name (CN)
  • mail.altstu.ru
Email
  • postmaster@mail.altstu.ru
Issuer

Certificate is self-signed.

validity period
Not valid before
2021-03-15
Not valid after
2022-03-15
Fingerprints
SHA256
49:C8:65:13:5B:C3:18:D9:2F:B3:59:1E:92:39:8D:F5:7C:EE:95:0D:81:E4:C0:50:F9:6B:0A:C2:6A:89:70:97
SHA1
8F:B1:0A:36:A2:60:6E:C0:43:96:2C:D7:9C:9B:AB:E2:E3:77:E4:AF
X509v3 extensions
nsCertType
  • SSL Server