Am 02.10.2014 um 16:16 schrieb li...@rhsoft.net: > Am 02.10.2014 um 16:10 schrieb Daniele Nicolodi: >> I have a system with a few local users where some of them are configured >> for forwarding all incoming messages to external addresses via the use >> of .forward. >> >> One of those users forwards mail to an hotmail.com address. >> >> When mail is delivered to this address this is what happens: >> >>> Oct 2 13:50:58 zed postfix/smtpd[1063]: connect from >>> bay004-omc1s27.hotmail.com[65.54.190.38] >>> Oct 2 13:50:59 zed postfix/smtpd[1063]: NOQUEUE: reject: RCPT from >>> bay004-omc1s27.hotmail.com[65.54.190.38]: 450 4.1.8 >>> <account-security-nore...@account.microsoft.com>: Sender address rejected: >>> Domain not found; from=<account-security-nore...@account.microsoft.com> >>> to=<r...@grinta.net> proto=ESMTP helo=<BAY004-OMC1S27.hotmail.com> >>> Oct 2 13:50:59 zed postfix/smtpd[1063]: disconnect from >>> bay004-omc1s27.hotmail.com[65.54.190.38]
BTW what you show here is *not* "One of those users forwards mail to an hotmail.com address" because the connection comes *from* hotmail and is pretty sure rejected by "reject_unknown_sender_domain" > there is no "account.microsoft.com" A-record and also no MX record > so @account.microsoft.com is not a valid sender > > if that comes directly from a microsoft server they need to learn > that a valid sender needs to accept mail which is not possible without > DNS records as others learned in the past > > sender adress verification as well as "reject_unknown_sender_domain" > reject such mails, for good reasons and not uncommon used
