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SMTP relay with more than one domain

Hello

I don't know if there is a solution. I placed this question already on the Sophos Email part of this community, but didn't get an answer.

I have to relay two mail accounts with two different domains (mail.private.com, mail.business.com). They are both by the same provider.

I made my first expierences with relaying of the first one and it's working - external-mail-server-secured-over-xg-firewall .

I tried also to integrate the second mail account (mai.business.com) and i got error message. One feedback which i got was that more than one relaying are possible, but the result is an error with a message i don't understand. See also the question I placed at community - smtp-relay-with-two-mail-domains

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:
wolfgang@business.com host local.myfirewall.co [180.100.244.237] SMTP error from remote mail server after RCPT TO:<wolfgang@business.com>: 550-Sophos Anti Spam Engine has blocked this Email because the sender IP 550 Address is blacklisted.
---------------------------------------------- message/delivery-status ----------------------------------------------
Reporting-MTA: dns; hos108.unaxus.net Action: failed Final-Recipient: rfc822;wolfgang@business.com
Status: 5.0.0 Remote-MTA: dns; local.myfirewall.co
Diagnostic-Code: smtp; 550-Sophos Anti Spam Engine has blocked this Email because the sender IP 550 Address is blacklisted.
---------------------------------------------- message/rfc822 ----------------------------------------------
Return-path: <wolfgang@protonmail.com>
Received: from [180.100.244.237] (port=60360 helo=privat.com) by hos108.unaxus.net with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from <wolfgang@protonmail.com>) id 1kDy1o-00GlD9-7L for wolfgang@business.com; Fri, 04 Sep 2020 00:48:24 +0200
Received: from mail1.protonmail.ch ([180.70.40.18]:25582) by privat.com with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91) (envelope-from <wolfgang@protonmail.com>) id 1kDy1h-0001VD-06 for wolfgang@business.com; Fri, 04 Sep 2020 00:48:17 +0200 Date: Thu, 03 Sep 2020 22:47:39 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=protonmail.com; s=protonmail; t=1599173266; bh=uidnY6jlxQy6tKVuIn8VjeA4Ly5IH6SAlBKL20lHlJs=; h=Date:To:From:Reply-To:Subject:From; b=MQTvdoWEu9XB8OgwZZmrQreSFSGoXgRLVJpiFNtG3Fz0ZFzMFzT/Lz86S7bemRIA1 1C6COwj617nUhJATi69w4SB3eugf4LR4VNwyxrElaEKi/WxGuNogQZEm7J66o0dIyM fzXgQGcM6WwZsCTlM6vxyaLs3hjWGRncjyYoELMg= To: "wolfgang@business.com" <wolfgang@business.com> From: Wolfgang <wolfgang@protonmail.com> Reply-To: Wolfgang <wolfgang@protonmail.com> Subject: Test MX 4 Message-ID: <2_GdmVwcsGqDz4Wb6COntnJi_INUmHA7o5Il-LOBYzjCDiP1qnYN2OfgQn2NhZnb4RykMiQT2rr5TXyZqZbLICkEnEfWxJU_VHsPJVf-mxM=@protonmail.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="b1_Rt9ltbmJON5cpsiXPpcBQaxEPbLvwAFiT2xYq0eQ" X-Spam-Status: No, score=-1.2 required=10.0 tests=ALL_TRUSTED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,HTML_MESSAGE shortcircuit=no autolearn=disabled version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on mailout.protonmail.ch X-Sophos-IBS: success X-CTCH-PVer: 0000001 X-CTCH-Spam: Unknown X-CTCH-VOD: Unknown X-CTCH-Flags: 0 X-CTCH-RefID: str=0001.0A09020A.5F5172B1.00B6:SCFSTAT63089915,ss=1,re=-4.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0 X-CTCH-Score: -4.000 X-CTCH-ScoreCust: 0.000 X-CTCH-Rules: X-Sophos-Firewall: smtpd v1.0 This is a multi-part message in MIME format. --b1_Rt9ltbmJON5cpsiXPpcBQaxEPbLvwAFiT2xYq0eQ Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: base64 ……… Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: base64 PGRpdj48YnI+……….--

Hope someone can help to find a solution.

Thanks
Wolfgang



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Parents Reply
  • Hi Philipp

    Sorry for the confusion of the IP-Address. My IP-Address isn't blacklisted. It's not the original address.

    I keep the IP and MAC addresses which are reachable by public secure in community. The original address is green.

    Btw. from the same address i relay another mail account without any problems.

    Thanks
    Wolfgang

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