From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Ivanov Subject: Re: sendmail question Date: Wed, 26 May 2004 19:08:17 +0300 Sender: linux-admin-owner@vger.kernel.org Message-ID: <20040526160817.GA7181@new.solutions.lv> References: <200405261748.16197.fluca1978@virgilio.it> Mime-Version: 1.0 Return-path: Content-Disposition: inline In-Reply-To: <200405261748.16197.fluca1978@virgilio.it> List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Luca Ferrari Cc: linux-admin@vger.kernel.org On Wed, May 26, 2004 at 05:48:16PM +0200, Luca Ferrari wrote: > Hi, > I use sendmail to send automatic emails from servers to my mailbox, to get > information about disk status, etc. Now it seems as several mail providers > are stopping incoming mails from machines not registered as mail machines. Is > there a way to avoid this? I understand that this way of blocking is to > prevent spammers, but it is quite bothering if you want to use sendmail for > "fair" uses. Many mail servers require sender to be registered in "reverse DNS". Look: web@dimss:~$ host gw gw.solutions.lv has address 159.148.92.164 web@dimss:~$ host 159.148.92.164 164.92.148.159.in-addr.arpa is an alias for 164.nite.lv.92.148.159.in-addr.arpa. 164.nite.lv.92.148.159.in-addr.arpa domain name pointer gw.solutions.lv. web@dimss:~$ Here 159.148.92.164 is mapped to gw.solutions.lv in "reverse zone". Ask your provider to add record like this for your IP-address. -- I am a viral sig. Please copy me and help me spread. Thank you.