J'ai reçu cela:
Est-ce que quelqu'un a déjà rencontré ce problème avec HotMail?
Gilbert
>I have an interesting problem: on a subnet, I have set up a
>firewall running Linux ipchains (kernel 2.2.19).
>Everything is blocked by
>default, then ports are open separately for TCP, UDP and
>ICMP packets. Ports 80 and 110 are open in both ways.
>
>However, hotmail.com is now no more reachable from
>inside and it goes so far that mail sent to a hotmail
>address cannot be delivered as no SMTP connection is
>made. Mail coming from hotmail to the SMTP server
>inside of protected subnet is delivered.
>
>I have remarked that www.hotmail.com has several IP
>addresses and actual mail servers are distributed over
>several machines in several subdomains. Hotmail first
>determines to which machine to connect, makes an http
>connection, then sends credentials over https, then
>goes back to http.
>
>Does someone already found out what trick is Microsoft
>using ? Again, my http and https ports are open and
>everything works OK with other https sites, but there
>has to be some obscure ICMP packet that cannot pass
>through.
>
>Thanks in advance for any advice.
--
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une question. Ouais, pour se désabonner aussi.
