Analysis report on domain: mail.s0.ak-internet.de favicon

mail.s0.ak-internet.de has no website

Generated on
14 Oct 2021 05:25
Duration of the analysis
20.9s
Share

Score 76%
B
DNS
B
DOMAIN
A
MAIL
B
WEB
B

Resume

DNS servers IP are in different class C

IPs have the same C class.

DNS servers are same in dns tree and whois

The whois name servers are not the same as the name servers from a dns query.

Whois return: lvps176-28-17-20.dedicated.hosteurope.de, ns2.hans.hosteurope.de
DNS tree return: lvps176-28-17-20.dedicated.hosteurope.de, ns.s0.ak-internet.de

DNS servers IP are differents

Ip for hosts lvps176-28-17-20.dedicated.hosteurope.de and ns.s0.ak-internet.de are same.

MX servers accept abuse@ address

s0.ak-internet.de [176.28.17.20] does not accept email to abuse@ak-internet.de.

MX servers accept postmaster@ address

s0.ak-internet.de [176.28.17.20] does not accept email to postmaster@ak-internet.de.

SMTP server type is hidden

s0.ak-internet.de with IP [176.28.17.20] displays the type of SMTP, postfix founded

220 s0.ak-internet.de ESMTP Postfix (Ubuntu)

Web application technology is hidden

Server is powered by: PHP/7.3.5,PleskLin

X-XSS-Protection header is present

The X-XSS-Protection header was not found.

Content Type Options header is present

The X-Content-Type-Options header was not found.

Content Security Policy header is present

The Content-Security-Policy header was not found.

DNS

Dns servers for s0.ak-internet.de

mail.s0.ak-internet.de was detected as host

Host informations

Ips
 
Cname
-

Query informations

Server
k.root-servers.net
[ 193.0.14.129 ]
Duration
33 ms
Type
authority
Headers
RCODE : 0 AA : 0 TC : 0

Response

Query informations

Server
a.nic.de
[ 194.0.0.53 ]
Duration
101 ms
Type
authority
Headers
RCODE : 0 AA : 0 TC : 0

Response

Query informations

Server
f.nic.de
[ 81.91.164.5 ]
Duration
29 ms
Type
authority
Headers
RCODE : 0 AA : 0 TC : 0

Response

Query informations

Server
l.de.net
[ 77.67.63.105 ]
Duration
4 ms
Type
authority
Headers
RCODE : 0 AA : 0 TC : 0

Response

Query informations

Server
n.de.net
[ 194.146.107.6 ]
Duration
16 ms
Type
authority
Headers
RCODE : 0 AA : 0 TC : 0

Response

Query informations

Server
s.de.net
[ 195.243.137.26 ]
Duration
30 ms
Type
authority
Headers
RCODE : 0 AA : 0 TC : 0

Response

Query informations

Server
z.nic.de
[ 194.246.96.1 ]
Duration
16 ms
Type
authority
Headers
RCODE : 0 AA : 0 TC : 0

Response

Query informations

Server
lvps176-28-17-20.dedicated.hosteurope.de
[ 176.28.17.20 ]
Duration
19 ms
Type
unknown
Headers
RCODE : 0 AA : 1 TC : 0

Query informations

Server
ns2.hans.hosteurope.de
[ 80.237.128.10 ]
Duration
156 ms
Type
authority
Headers
RCODE : 0 AA : 0 TC : 0

Response

Query informations

Server
ns.s0.ak-internet.de
[ 176.28.17.20 ]
Duration
19 ms
Type
unknown
Headers
RCODE : 0 AA : 1 TC : 0

Query informations

Server
ns2.hans.hosteurope.de
[ 80.237.128.10 ]
Duration
22 ms
Type
authority
Headers
RCODE : 0 AA : 0 TC : 0

Response

Query informations

Server
ns.s0.ak-internet.de
[ 176.28.17.20 ]
Duration
18 ms
Type
unknown
Headers
RCODE : 0 AA : 1 TC : 0

Query informations

Server
ns2.hans.hosteurope.de
[ 80.237.128.10 ]
Duration
23 ms
Type
authority
Headers
RCODE : 0 AA : 0 TC : 0

Response

Query informations

Server
ns.s0.ak-internet.de
[ 176.28.17.20 ]
Duration
17 ms
Type
unknown
Headers
RCODE : 0 AA : 1 TC : 0

Query informations

Server
ns2.hans.hosteurope.de
[ 80.237.128.10 ]
Duration
16 ms
Type
authority
Headers
RCODE : 0 AA : 0 TC : 0

Response

Query informations

Server
ns.s0.ak-internet.de
[ 176.28.17.20 ]
Duration
18 ms
Type
unknown
Headers
RCODE : 0 AA : 1 TC : 0

Query informations

Server
ns2.hans.hosteurope.de
[ 80.237.128.10 ]
Duration
21 ms
Type
authority
Headers
RCODE : 0 AA : 0 TC : 0

Response

Name servers

A and AAAA fields

IPv4
176.28.17.20
TTL
43200 (12 hours )
IPv6
2a01:488:66:1000:b01c:1114:0:1
TTL
43200 (12 hours )

SOA

From
ns.s0.ak-internet.de
Master server
ns2.hans.hosteurope.de
TTL
10800 (3 hours)
Contact
d4aDgg==@ak-internet.de
Serial
1581458565
Refresh
10800 (3 hours)
Retry
3600 (1 hour)
Expire
604800 (1 week)
Minimum
10800 (3 hours)
Your domain is not protected by DNSSEC DNSSEC Definition

DNS servers IP are in different class C

IPs have the same C class.

The class C of each IP must be different so that the servers are not found on the same bay and therefore there is a risk of unavailability.

RFC

0.000s

DNS servers IP are differents

Ip for hosts lvps176-28-17-20.dedicated.hosteurope.de and ns.s0.ak-internet.de are same.

IPs for DNS servers must be different in order to have high availability.

0.001s

BIND version is hidden

Passed

The Bind version should not be visible otherwise it will be possible to search for potential security vulnerabilities of the version.

0.012s

Domain have at least 2 DNS servers

Passed

In order for the availability rate of DNS servers to be at its highest, it is vital and recommended by the RFC to have at least 2 servers.

RFC

0.000s

All Dns servers are responding

Passed

Every DNS servers should be accessible and accept public query.

0.011s

All servers return success

Passed

It's important that all servers returned a "success" code.

0.013s

Responses are not CNAME or A

Passed

The answers should not be a CNAME or A type.

RFC

0.011s

SOA are synchronized

Passed

The SOA answered by the DNS servers must be identical for each servers. The most important information is the master server and the contact email address.

0.000s

SOA email is valid

Passed

An email address must respect some conditions to be valid, accordding to the RFC 5322.

RFC

0.000s

SOA refresh is valid

Passed

The refresh value be must between 1200 and 43200.

RFC

0.000s

SOA retry, refresh and expire values are correct

Passed

The Retry, Refresh and Expire values musth follow this path : retry < refresh < expire.

RFC

0.000s

DNS servers are not open relay

Passed

DNS resolvers that allow queries from all IP addresses and are exposed to the Internet can be attacked and used to conduct Denial of Service (DoS) attacks on behalf of the hacker.

0.012s

Transfer zone is disable

Passed

An attacker can use a zone transfer that contains a malicious code or an inappropriate format that crashes a DNS server vulnerable to this type of attack, which results in a DoS that destabilizes the DNS services. It is possible to test it manually with this commands: #host -T axfr or #dig axfr.

documentation

0.033s

Recursive query is disable

Passed

Having a dns server that allow recursive queries is a security risk, DDOS attack can be performed.

RFC documentation documentation

0.011s

DNS servers IP are not private

Passed

It is strictly forbidden to have private IP in DNS

documentation

0.000s

Same MX are returned

Passed

It is extremely important that each DNS return the same MX records in order to avoid contacting an SMTP server that no longer exists.

0.011s

DNS servers are synchronized

Skipped

The synchronization of the DNS servers must be perfect in order to avoid any dns resolution error. The servers must therefore give the same answer when asked "what are the DNS servers for the domain?".

0.000s

Domain

Whois

Registrar
-
Owner
-
Created at
unknown
Changed at
21 Dec 2017
Expires at
unknown

Reputation

Google Safe Browsing
Web of trust
Blacklists
Virus Total
Domain
Whois server
whois.denic.de
Created at
unknown
Changed at
21 Dec 2017
Expires at
unknown
Name servers

Google Safe Browsing

Status

Web of Trust

Status

Blacklists

RFC Ignorant
Rbl Jp
RblDns
Sorbs
Spam Eating Monkey
SpamHaus
SuRbl
Support Intelligence
Swinog
UriBl

Virus Total

DNS servers are same in dns tree and whois

The whois name servers are not the same as the name servers from a dns query.

Whois return: lvps176-28-17-20.dedicated.hosteurope.de, ns2.hans.hosteurope.de
DNS tree return: lvps176-28-17-20.dedicated.hosteurope.de, ns.s0.ak-internet.de

The dns servers given in the domain whois must be the same as those returned by a dns resolution request.

0.000s

Domain is not blacklisted

Passed

A domain must not be blacklisted or it will be penalized for referencing and deliverability of emails.

0.000s

Domain is not listed in Google Safe Browsing

Passed

Google safe browsing categorizes a domain as bad if something suspicious is detected.

0.000s

Domain is not listed in VirusTotal

Passed

Virus Total analyze your domain or IP address with 66 antivirus.

0.000s

Domain have good reputation on Web of Trust

Passed

Web Of Trust rates thousands of websites and find threats if they exist.

0.000s

Mail

Mail servers

Name
s0.ak-internet.de
IP
176.28.17.20
Banner
220 s0.ak-internet.de ESMTP Postfix (Ubuntu)
Name
s0.ak-internet.de
IP
176.28.17.20
Banner
220 s0.ak-internet.de ESMTP Postfix (Ubuntu)
Starttls
yes
Dane
no
Mail size
30 MB
Expn
no
Vrfy
no

Smtp simulation

Connection to s0.ak-internet.de ...
220 s0.ak-internet.de ESMTP Postfix (Ubuntu)
HELO domain.com
250 s0.ak-internet.de
EHLO domain.com
250-s0.ak-internet.de
250-PIPELINING
250-SIZE 31457280
250-ETRN
250-STARTTLS
250-AUTH DIGEST-MD5 CRAM-MD5 PLAIN LOGIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
QUIT
221 2.0.0 Bye

Autodiscover not configured

MX servers accept abuse@ address

s0.ak-internet.de [176.28.17.20] does not accept email to abuse@ak-internet.de.

According to the RFC 2142, SMTP server should accept abuse@yourDomain as a recipient.

RFC

0.126s

MX servers accept postmaster@ address

s0.ak-internet.de [176.28.17.20] does not accept email to postmaster@ak-internet.de.

According to the RFC 5321, SMTP server should accept postmaster@yourDomain as a recipient.

RFC

0.139s

SMTP server type is hidden

s0.ak-internet.de with IP [176.28.17.20] displays the type of SMTP, postfix founded

220 s0.ak-internet.de ESMTP Postfix (Ubuntu)

There is a risk to display the type and the version of the server, because people can find a breach for a specific version and use it

0.000s

MX IPs have reverse

Passed

When a sending server makes a connection to the recipient server, the recipient server notes the sending IP address and performs a reverse lookup, called a PTR lookup, named after the type of DNS record used. If the result of the reverse lookup matches the result of a forward DNS Lookup, then it's much more likely that the message is legitimate. If the IP address doesn't match, it's much more likely that the sending address was spoofed and therefore much more likely that it's unwanted and could be considered spam.

documentation

0.000s

HELO command is accepted

Passed

According to the RFC 2181, smtp server should accept HELO command

RFC

0.000s

EHLO command is accepted

Passed

According to the RFC 2181, smtp server should accept EHLO command

RFC

0.000s

STARTTLS command is accepted

Passed

STARTTLS turns an unencrypted connection into a secure connection. Note: You can use a service like altospam to solve this problem. Click on the link below to learn more

0.000s

EXPN command is refused

Passed

EXPN command is now considered to be a security risk, spammers being able to harvest valid e-mail addresses via each mailing list.

0.000s

VRFY command is refused

Passed

As the EXPN command, VRFY is used by spammers to verify an address.

0.000s

MX servers are not open relay

Passed

If a server is open relay, there is a risk that spammers use your server to send illegitimate mail.

0.172s

Banner return 2xx or 4xx code

Passed

The banner must return (2xx) a valid (4xx) or temporary code.

0.000s

Banner return server name

Passed

Banner must contain the name of the server

0.000s

MX servers are accessibles

Skipped

Smtp servers that are listed in DNS area must be accessible, otherwise, there is a risk that emails may be lost

0.000s

Web

Website

Url
https://mail.s0.ak-internet.de/
Https
Title
Unknown
Description
Unknown
First paragraph
Unknown
Url
http://mail.s0.ak-internet.de/
Title
Unknown
Description
Unknown
Response time
0.036 second
Server
apache
Powered by
php (version 7.3.5)
Encoding
utf-8
HSTS

Headers

  • Connection: close
  • Content-Type: text/html; charset=UTF-8
  • Date: Thu, 14 Oct 2021 05:25:32 GMT
  • MS-Author-Via: DAV
  • Server: Apache
  • Transfer-Encoding: chunked
  • Vary: Accept-Encoding
  • X-Powered-By: PHP/7.3.5, PleskLin
Url
https://mail.s0.ak-internet.de/
Title
Unknown
Description
Unknown
Response time
0.075 second
Server
apache
Powered by
php (version 7.3.5)
Encoding
utf-8
HSTS

Headers

  • Connection: close
  • Content-Type: text/html; charset=UTF-8
  • Date: Thu, 14 Oct 2021 05:25:32 GMT
  • MS-Author-Via: DAV
  • Server: Apache
  • Transfer-Encoding: chunked
  • Vary: Accept-Encoding
  • X-Powered-By: PHP/7.3.5, PleskLin

Web application technology is hidden

Server is powered by: PHP/7.3.5,PleskLin

To avoid giving details to malicious people, the technology that supports the application should not be visible.

0.000s

X-XSS-Protection header is present

The X-XSS-Protection header was not found.

The HTTP X-XSS-Protection response header is a feature of Internet Explorer, Chrome and Safari that stops pages from loading when they detect reflected cross-site scripting (XSS) attacks.

documentation

0.000s

Content Type Options header is present

The X-Content-Type-Options header was not found.

The only defined value, "nosniff", prevents Internet Explorer from MIME-sniffing a response away from the declared content-type. This also applies to Google Chrome, when downloading extensions.

RFC

0.000s

Content Security Policy header is present

The Content-Security-Policy header was not found.

The HTTP Content-Security-Policy response header allows web site administrators to control resources the user agent is allowed to load for a given page. With a few exceptions, policies mostly involve specifying server origins and script endpoints. This helps guard against cross-site scripting attacks (XSS).

documentation

0.000s

Domain have "A" field

Passed

The domain must have an A field in order for the website to be accessible.

0.000s

Domain have "AAAA" field

Passed

It is highly recommended to have an IPv6 for the website.

0.000s

HTTP port (80) is open

Passed

This test verifies the presence of a website for the given IP or domain. Then scans port 80.
If the domain or IP is pointing to a website then port 80 must be open so that it can be accessed from a browser.
Otherwise port 80 must be closed.

0.000s

HTTPS port (443) is open

Passed

This test verifies the presence of a website for the given IP or domain. Then scans port 443.
If the domain or IP is pointing to a website then port 443 must be open so that it can be accessed from a browser.
Otherwise port 443 must be closed.

0.000s

Web server version is hidden

Passed

To avoid giving details to malicious people, the version of the server should not be visible.

0.000s

Host "www" have "A" field

Skipped

WWW host is not required for a website, but it's better to have one.

0.000s

Host "www" have "AAAA" field

Skipped

If you configure a WWW host for your website, it is recommended to have an IPv6.

0.000s

Cookies are secure

Skipped

Using "HttpOnly" instruction prevents someone to access to cookies via Javascript. The secure flag will allow you to prevent a cookie from ever being communicated in simple HTTP. (RFC 6265 section 8.3)

RFC

0.000s