Am 29.04.2011 15:15, schrieb Бак Микаел: > Apr 29 14:58:08 mx postfix/smtpd[4880]: connect from > xxx.yyy.zzz[xxx.yyy.zzz.xxx] > Apr 29 14:58:09 mx postfix/smtpd[4880]: warning: valid_hostname: empty > hostname > Apr 29 14:58:09 mx postfix/smtpd[4880]: warning: malformed domain name > in resource data of MX record for somedomain.com: > Apr 29 14:58:09 mx postfix/smtpd[4880]: NOQUEUE: reject: RCPT from > xxx.yyy.zzz[xxx.yyy.zzz.xxx]: 450 4.1.8 <i...@somedomain.com>: Sender > address rejected: Malformed DNS server reply; from=<i...@somedomain.com> > to=<u...@example.com> proto=ESMTP helo=<xxx.yyy.zzz> > Apr 29 14:58:09 mx postfix/smtpd[4880]: disconnect from > fxxx.yyy.zzz[xxx.yyy.zzz.xxx]
normally i write a mail to the admin or abuse of the network if the mail-config of them is totally broken if isee such things in my logs, i know it will not heal the world but maybe some ignorant admins wake up > And: > > $ host somedomain.com > somedomain.com has address yyy.zzz.xxx.yyy > somedomain.com mail is handled by 0 . > > This looks like a Null MX record: > http://tools.ietf.org/html/draft-delany-nullmx-00 > > If the domain owner declares that this domain never sends or recieves > email, then shouldn't postfix reject the above message with a permanent > error? as wietse said: this is a draft the indication that the domain does not send mail should be done in a SPF like the following, but this does not interest postfix and is only a hint form spam-scoring we to this automatically in our dns-backends while generating zone-files for domains without mx-records domain.tld. 7200 IN TXT "v=spf1 -all"
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