P.V.Anthony:
> Hi,
>
> Postfix is giving the following error message.
>
> -------- start ---------------
> Host or domain name not found. Name
> service error for name=schools.gov.sg type=AAAA: Host found but no data
> record of requested type
> -------- end -----------------
>
> schools.gov.sg has MX records but no A or AAAA records.
>
> Postfix is not allowing to send emails to schools.gov.sg.
Postfix delivers mail to schools.gov.sg just fine, as demonstrated with
"sendmail -bv postmas...@schools.gov.sg". in the example below
it chose mail4a.schools.gov.sg with IPv4 address 166.121.177.66.
Wietse
This is the mail system at host spike.porcupine.org.
Enclosed is the mail delivery report that you requested.
The mail system
<postmas...@schools.gov.sg>: delivery via
mail4a.schools.gov.sg[166.121.177.66]:25: 250 recipient
<postmas...@schools.gov.sg> ok
--4CblFG4j4SzJrNs.1605708904/spike.porcupine.org
Content-Description: Delivery report
Content-Type: message/delivery-status
Reporting-MTA: dns; spike.porcupine.org
X-Postfix-Queue-ID: 4CblFG4j4SzJrNs
X-Postfix-Sender: rfc822; wie...@porcupine.org
Arrival-Date: Wed, 18 Nov 2020 09:14:58 -0500 (EST)
Final-Recipient: rfc822; postmas...@schools.gov.sg
Original-Recipient: rfc822;postmas...@schools.gov.sg
Action: deliverable
Status: 2.0.0
Remote-MTA: dns; mail4a.schools.gov.sg
Diagnostic-Code: smtp; 250 recipient <postmas...@schools.gov.sg> ok
--4CblFG4j4SzJrNs.1605708904/spike.porcupine.org
Content-Description: Message Headers
Content-Type: text/rfc822-headers
Content-Transfer-Encoding: 8bit
Return-Path: <wie...@porcupine.org>
Received: by spike.porcupine.org (Postfix, from userid 1001)
id 4CblFG4j4SzJrNs; Wed, 18 Nov 2020 09:14:58 -0500 (EST)
DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=porcupine.org;
s=dktest; t=1605708898;
bh=frcCV1k9oG9oKj3dpUqdJg1PxRT2RSN/XKdLCPjaYaY=;
h=From:Subject:To:Message-Id:Date;
b=TvTPczu7UdgObP3hWO5oCfYspAYki7Rs5ff/We2EqnNQbEfgOR2lARy3jnCv29Hv7
elWqyzANxpcV43pj4lyMrVPyV48ci9EqwkhCo6W05BwYXa8zH19qdjOiToemhx7LPV
JwZvK+mKtBChZ5JKcE20tCm9uclVghyMV8RfJvlU=
From: wie...@porcupine.org
Subject: probe
To: postmas...@schools.gov.sg
Message-Id: <4cblfg4j4szj...@spike.porcupine.org>
Date: Wed, 18 Nov 2020 09:14:58 -0500 (EST)
--4CblFG4j4SzJrNs.1605708904/spike.porcupine.org--
