[Internet-e-architetture-di-rete] esercizio DNS, SMTP, HTTP

Tue Dec 20 20:34:49 CET 2016

 Ciao Antonio,
ecco qui di seguito lo svolgimento:

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d: quirinale.it

MX
fabio at fabio-virtual-machine:~$ dig MX +short quirinale.it
10 edge1.quirinale.it.
10 edge2.quirinale.it.

*** Hanno la stessa priorità, prendo in considerazione il primo: ***

MAIL
fabio at fabio-virtual-machine:~$ telnet edge1.quirinale.it 25
Trying 193.108.205.107...
Connected to edge1.quirinale.it.
Escape character is '^]'.
220 edge1.quirinale.it Microsoft ESMTP MAIL Service ready at Tue, 20 Dec
2016 15:13:36 +0100
EHLO mytest.com
250-edge1.quirinale.it Hello [79.26.186.65]
250-SIZE 41943040
250-PIPELINING
250-DSN
250-ENHANCEDSTATUSCODES
250-X-ANONYMOUSTLS
250-AUTH
250-X-EXPS NTLM
250-8BITMIME
250-XEXCH50
250 XSHADOW
mail from:test at mytest.com
250 2.1.0 Sender OK
rcpt to:postmaster at quirinale.it
250 2.1.5 Recipient OK
data
354 Start mail input; end with <CRLF>.<CRLF>
test message
.
550 5.7.1 Requested action not taken: message refused
Connection closed by foreign host.

*** Stesso comportamento per edge2.quirinale.it ***

WWW
fabio at fabio-virtual-machine:~$ telnet www.quirinale.it 80
Trying 193.108.205.18...
Connected to www.quirinale.it.
Escape character is '^]'.
GET / HTTP/1.1
HOST: www.quirinale.it

HTTP/1.1 302 Redirect
Connection: Keep-Alive
Content-Length: 147
Date: Tue, 20 Dec 2016 14:08:47 GMT
Location: http://www.quirinale.it/
Content-Type: text/html; charset=UTF-8
Server: Microsoft-IIS/7.5
X-Frame-Options: SAMEORIGIN

<head><title>Document Moved</title></head>
<body><h1>Object Moved</h1>This document may be found <a HREF=
"http://www.quirinale.it/" <http://www.quirinale.it/>>here</a></body>
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d: palazzochigi.it.it

MX
fabio at fabio-virtual-machine:~$ dig MX +short palazzochigi.it
10 mx-ext3.palazzochigi.it.
10 mx-ext4.palazzochigi.it.

MAIL
fabio at fabio-virtual-machine:~$ telnet mx-ext3.palazzochigi.it 25
Trying 195.66.9.244...
Connected to mx-ext3.palazzochigi.it.
Escape character is '^]'.
220 mx-ext3.palazzochigi.it ESMTP Postfix
ehlo mytest.com
250-mx-ext3.palazzochigi.it
250-PIPELINING
250-SIZE 41943040
250-ETRN
250-STARTTLS
250-AUTH LOGIN GSSAPI DIGEST-MD5 PLAIN CRAM-MD5
250-AUTH=LOGIN GSSAPI DIGEST-MD5 PLAIN CRAM-MD5
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
mail from:test at mytest.com
250 2.1.0 Ok
rcpt to:postmaster at palazzochigi.it
554 5.7.1 Service unavailable; Client host [79.26.186.65] blocked using
zen.spamhaus.org;
https://www.spamhaus.org/query/ip/79.26.186.65

Andando a controllare su spamhaus.org all'indirizzo in questione ho trovato
la seguente spiegazione:

Ref: PBL175163
79.24.0.0/14 is listed on the Policy Block List (PBL)

Outbound Email Policy of ASN3269 / ASN-IBSNAZ TELECOM ITALIA for this IP
range:
It is the policy of ASN3269 / ASN-IBSNAZ TELECOM ITALIA that
unauthenticated email
sent from this IP address should be sent out only via the designated
outbound mail
server allocated to ASN3269 / ASN-IBSNAZ TELECOM ITALIA customers.
To find the hostname of the correct mail server to use, customers should
consult
the original signup documentation or contact
ASN3269 / ASN-IBSNAZ TELECOM ITALIA Technical Support.

WWW
fabio at fabio-virtual-machine:~$ telnet www.palazzochigi.it 80
Trying 195.66.10.19...
Connected to www.palazzochigi.it.
Escape character is '^]'.
GET / HTTP/1.1
HOST:www.palazzochigi.it
Connection closed by foreign host.

*** Per quanto provi, ottengo sempre la stessa risposta ***
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d: agid.it

MX
fabio at fabio-virtual-machine:~$ dig MX +short agid.it
10 agid-it.mail.protection.outlook.com.

MAIL
fabio at fabio-virtual-machine:~$ telnet agid-it.mail.protection.outlook.com 25
Trying 213.199.154.138...
Connected to agid-it.mail.protection.outlook.com.
Escape character is '^]'.
220 VE1EUR03FT061.mail.protection.outlook.com Microsoft ESMTP MAIL Service
ready at Tue, 20 Dec 2016 18:00:44 +0000
ehlo mytest
250-VE1EUR03FT061.mail.protection.outlook.com Hello [79.26.186.65]
250-SIZE 157286400
250-PIPELINING
250-DSN
250-ENHANCEDSTATUSCODES
250-STARTTLS
250 8BITMIME
mail from:test at mytest.com
250 2.1.0 Sender OK
rcpt to:postmaster at agid.it
550 5.7.606 Access denied, banned sending IP [79.26.186.65].
To request removal from this list please visit https://sender.office.com/
and follow the directions.
For more information please go to  http://go.microsoft.com/
fwlink/?LinkID=526655 (AS16012609)

WWW
fabio at fabio-virtual-machine:~$ telnet www.agid.it 80
Trying 89.97.56.22...
Connected to www.agid.it.
Escape character is '^]'.
GET / HTTP/1.1
HOST:www.agid.it

HTTP/1.1 302 Found
Date: Tue, 20 Dec 2016 18:06:37 GMT
Server: Apache/2.4.18 (Ubuntu)
Location: http://www.agid.gov.it
Content-Length: 283
Content-Type: text/html; charset=iso-8859-1

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>302 Found</title>
</head><body>
<h1>Found</h1>
<p>The document has moved <a href="http://www.agid.gov.it"
<http://www.agid.gov.it>>here</a>.</p>
<hr>
<address>Apache/2.4.18 (Ubuntu) Server at www.agid.it Port 80</address>
</body></html>
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d: interno.it

MX
fabio at fabio-virtual-machine:~$ dig MX +short interno.it
5 mail.interno.it.

MAIL
fabio at fabio-virtual-machine:~$ telnet mail.interno.it 25
Trying 62.77.42.99...
Connected to mail.interno.it.
Escape character is '^]'.
554 5.7.1 You are not allowed to connect.
Connection closed by foreign host.
 *** Per qianto ci provi, ottengo sempre la stessa risposta ***
#################################################################

d: esteri.it

MX
fabio at fabio-virtual-machine:~$ dig MX +short esteri.it
10 mail.esteri.it.
20 mail2.esteri.it.

MAIL
fabio at fabio-virtual-machine:~$ telnet mail.esteri.it 25
Trying 85.116.228.202...
Connected to mail.esteri.it.
Escape character is '^]'.
554-mail.esteri.it
554 Your access to this mail system has been rejected due to the sending
MTA's poor reputation.
If you believe that this failure is in error, please contact the intended
recipient via alternate means.
Connection closed by foreign host.

*** Provo con l'altro mail server... ***

fabio at fabio-virtual-machine:~$ telnet mail2.esteri.it 25
Trying 85.116.228.212...
Connected to mail2.esteri.it.
Escape character is '^]'.
554-mail2.esteri.it
554 Your access to this mail system has been rejected due to the sending
MTA's poor reputation.
If you believe that this failure is in error, please contact the intended
recipient via alternate means.
Connection closed by foreign host.
fabio at fabio-virtual-machine:~$
#################################################################

Saluti frustrati,
Fabio

2016-12-19 23:58 GMT+01:00 Antonio Prado via
Internet-e-architetture-di-rete <
internet-e-architetture-di-rete at list.informagiovani.comunesbt.it>:

> On 12/19/16 11:41 PM, Sabrina Palanca via
> Internet-e-architetture-di-rete wrote:
> > WWW
> > telnet www.quirinale.it 80
> > Trying 193.108.205.18...
> > Connected to www.quirinale.it.
> > Escape character is '^]'.
> > GET /leg17/1 HTTP/1.1
>
> cos'e' questo URI relativo?
>
> > MAIL
> > telnet mx-ext3.palazzochigi.it 25
> > Trying 195.66.9.244...
> > 550 5.1.1 <postmaster at palazzochigi.it>: Recipient address rejected:
> > undeliverable address: host relay.ironport[195.66.10.6] said: 550 #5.1.0
>
> cosa succede qua tra 195.66.9.244 e 195.66.10.6?
>
> >
> > WWW
> > telnet www.palazzochigi.it 80
> > Trying 195.66.10.19...
> > Connected to www.palazzochigi.it.
> > Escape character is '^]'.
> GET / HTTP/1.1
> HOST: www.palazzochigi.it
> > Connection closed by foreign host.
>
> manca un CR LF
>
> grazie
> --
> antonio
>
>
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