Hibauzi ismeretlen feladoval

[Ferenc Bajan]

Hello!

On Thu, 13 Jan 2005, Auth [iso-8859-2] Gábor wrote:

>> Epp esszel teljesen elvarhato egy MTA-tol, hogy olyan gepen fusson
>> aminek van reverse DNS-e (ugye MUA-ktol nem kell levelet fogadnod, csak
>> a sajat halozatodon).
>
>  Van rá példa. Sok helyen. Csak szerencséd van esetleg. :)
Elmenten a www.dnsreport.com-ra, ami a kovetkezot allitotta a zonamrol:
PASS
Reverse DNS entries for MX records OK.

The IPs of all of your mail server(s) have reverse DNS (PTR) entries. 
RFC1912 2.1 says you should have a reverse DNS for all your mail servers. 
It is strongly urged that you have them, as many mailservers will not 
accept mail from mailservers with no reverse DNS entry. Note that this 
information is cached, so if you changed it recently, it will not be 
reflected here (see the www.DNSstuff.com Reverse DNS Tool for the current 
data). The reverse DNS entries are:

33.255.199.195.in-addr.arpa relay1.sys.sulinet.hu. [TTL=3600]
34.255.199.195.in-addr.arpa relay2.sys.sulinet.hu. [TTL=3600]
145.213.199.195.in-addr.arpa calypso.tbsz.sulinet.hu. [TTL=12800]

Azaz az RFC1912 2.1 pontja szerint a mail servereknek KELL reverse DNS.
Egy masik pontban:
WARN
Mail server host name in greeting WARNING: One or more of your 
mailservers may be claiming to be a host other than what it really is (the 
SMTP greeting should be a 3-digit code, followed by a space or a dash, 
then the host name). This probably won't cause any harm, but may be a 
technical violation of RFC821 4.3 (and RFC2821 4.3.1).

relay1.sys.sulinet.hu claims to be host relay1.sulinet.hu.
relay2.sys.sulinet.hu claims to be host relay2.sulinet.hu.

Az RFC821 4.3 pontjaba es az RFC2821 4.3.1 pontjaba utkozik, ha egy server 
(mint a fenti ketto) az SMTP helozas kozben nem a regisztralt hostneven 
jelentkezik be.


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                                                          Bajan Ferenc