I have ISPConfig 3 set up with several domain names. I am on a dynamic IP which is blacklisted by SpamHaus so I followed another HowTo here to relay thru an email server account I have elsewhere. Now I can send emails from my local accounts without getting rejected. But I can not receive emails. If sent to a yahoo account, yahoo receives ok. Trying to reply gives... Code: Hi. This is the qmail-send program at yahoo.com. I'm afraid I wasn't able to deliver your message to the following addresses. This is a permanent error; I've given up. Sorry it didn't work out. <email@example.com>: Sorry, I couldn't find a mail exchanger or IP address. (#5.4.4) --- Below this line is a copy of the message. Return-Path: <firstname.lastname@example.org> Received: (qmail 59772 invoked by uid 60001); 26 Apr 2009 19:42:57 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1240774977; bh=9ObKdF1j79JB4kOcN05qoE35zC6+8+lApgR3WB1VdAo=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=Zy+qwJR3GMGq4uuK4dHJoNlhpOZCgTyjMkmVHKAKnfkvNcJn6eoywhc9Xl5RhQEpaVsUGIncZsbm8OJJH54LaRDL9v/G0R6tZ/IN1cKw/gIDsKofoesJwfMn+H7UfDbka+bXLSbyfDVGSik/hvu7GpSceAl4A0gzZUziWnNQeqU= DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=bHQf1xYO2wb6EcRoSfeMM6DV3kKWFIOdjh85iS6SGniqXZRaMqYr1Jp1vqHt3Vs/lfehMjj8WIXWiKUYIJ0W62rzHi7w7qoFVlaMmDq1hamW2xGqcJQMbkCEZ3KYFsNXu8Cj0J3jDktYgOE+erzt7al3Ay2UO7NMfWe4ScJEnNs=; Message-ID: <email@example.com> X-YMail-OSG: Wl0NdAgVM1kGSvgMUpkCheHVy9bkob8XtsCCm2uJOAGbWOIXrz_WkWaiHCcjSB7ql89NuiH6yQcZu754Jm42y4cPHb3ksYPrYbSff3CgTg5Wo84SHwTDmPlFomiPskS42pSVbGHHTFAyl3EFwri.jTGCOUgrHxW4vlErQWdHHEuKLgSGyJZN.91XHHicTmIH1JBlqYp96KkyzwDYsjOdyDkkKvq4rdaO2BbUQvjP.SuAJ20kvX9goorr.P2sITi7QYHt4tSJozyg2IXaClxggL4uIKkn_Lsphi.4lE4BMsh9jH1Wnv5DNyw- Received: from [188.8.131.52] by web50209.mail.re2.yahoo.com via HTTP; Sun, 26 Apr 2009 12:42:57 PDT X-Mailer: YahooMailWebService/0.7.289.1 Date: Sun, 26 Apr 2009 12:42:57 -0700 (PDT) From: J <firstname.lastname@example.org> Reply-To: email@example.com Subject: Re: yahoo test To: firstname.lastname@example.org In-Reply-To: <email@example.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii If I send a message to an email address on the server I'm relaying thru 2 copies arrive. When I reply I get a copy of the response and 2 copies of the following failure message... Code: This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed: admin@nonexistent_example.com (ultimately generated from firstname.lastname@example.org) Unrouteable address ------ This is a copy of the message, including all the headers. ------ Return-path: <john@other_example.com> Received: from cpe-24-25-213-194.san.res.rr.com ([184.108.40.206]:51995 helo=[10.0.0.100]) by dallas4.tx.ipxf.net with esmtpa (Exim 4.69) (envelope-from <john@other_example.com>) id 1LyAJl-0002lu-TD for email@example.com; Sun, 26 Apr 2009 14:47:14 -0500 Subject: Re: other_example.com test From: <john@other_example.com> Reply-To: john@other_example.com To: firstname.lastname@example.org In-Reply-To: <email@example.com> References: <firstname.lastname@example.org> Content-Type: text/plain Date: Sun, 26 Apr 2009 12:47:11 -0700 Message-Id: <email@example.com> Mime-Version: 1.0 X-Mailer: Evolution 220.127.116.11 Content-Transfer-Encoding: 7bit On Sun, 2009-04-26 at 12:46 -0700, firstname.lastname@example.org wrote: > other_example.com test That I'm getting 2 copies and an email address in the message that shouldn't exist (admin@nonexistent_example.com) makes me thing there is a forwarder set up at my offsite ISP. I do not have one set up and they haven't responded. I seem to have my local DNS and MX records set up. I changed /etc/postfix/main.cf line MYDESTINATIONS to point to a file called local-host-names, then added all my domains to that file (including mail.domain.com). So does this appear to be a local problem or a problem at my relay ISP? Does the relaying only affect sending mail (which seems to work ok) or can it mess with my receiving mail as well? ... I changed the email addresses and domains in the examples to avoid spam bots, the actual local mailserver domain is host.servidora.net, and a domain I'm trying to receive at is sys666.net. Thanks for any pointers, you guys are great.