Wednesday , August 16 2017

550 Address unknown – Sophos UTM 9

From Office365/Gmail fails to Exchange On-Premises

External to Internal Mails 550 Address unknown

Anti-spam Sophos UTM 9

NDR From Office 365 to Exchange 2010/2013/2016 On Premises –

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Original Message Details
Created Date: 11/8/2016 4:25:50 PM
Sender Address: test@external.com
Recipient Address: user@careexchange.in
Subject: Test333
Error Details
Reported error: 550 5.0.350 Remote server returned an error -> 550 Address unknown
DSN generated by: KL13306MB1655.apcprd06.prod.outlook.com
Remote server: mail.careexchange.in

 

NDR From Gmail to Exchange 2010/2013/2016 On Premises –

Delivery to the following recipient failed permanently:

user@careexchange.in
Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domain careexchange.in by mail.careexchange.in . [81.13.83.22].
The error that the other server returned was:
550 Address unknown

—– Original message —–
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
d=gmail.com; s=20120113;
h=mime-version:from:date:message-id:subject:to;
bh=dZ+ndmdI1p6cWqUcsfJgQOCj3fZJYQi48MT/FaXgX8g=;
b=Nk6rN0yWdwctAitjOJt8nmNInBfI7PcjXy2tf2DGL6MRVX4kvGcU6gOlhk3v3sxjBs
3+JD31IxI+m33333333333333333QJfJ4/YmonoDQrymlBLiL5ZWJfe0
kVuisrrnbws650cEA3NWgin2T8LFomQXsymcImucrndNAU2hJXn4ijIDDhNMKHHINKu3
33333333333333333333333333333333333/h37XFiPTX69
j4zuGUZie5lUu9XKpxCs/u/VVzr5DXJw8zkN9GuMFMXZgRFJxa8qUni67CQwqEfNfwUM
n9wA==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
d=1e100.net; s=20130820;
h=x-gm-message-state:mime-version:from:date:message-id:subject:to;
bh=dZ+ndmdI1p6cWqUcsfJgQOCj3fZJYQi48MT/FaXgX8g=;
b=brbRKkaNqFja0Mn0H3333333333333j44FpKUYCgn1NHkIslBpQbA0QGZNdala
XJT6mqu8f9t2KlVy5OiN71vZ+XmY4ZxPUVNj5jb8LzbaklCO5TXU1RDjx8FqupA1lRLv
GObo/NW941kln+DwoXk9333333333333333+jBXvc1GeDPCUNBj9OWPUdfinOqe
sAD3FHfh35DETPskq1hYcl7X/zHfAnvLK6T4jqsWMo6e5NR89brdp0tdzTlT1IwAPT3G
rF/IecyK+uEHDF6lcHM8NG+yPN2EQ6prwAlIlSVZwvSlUC2R/7EHkN6xwbLoB6Dzr8l/
/5EQ==
X-Gm-Message-State: ABUngvfPYs55pDPkjNAB2zR/O8vG7A/uxJlTIuQRO9vgy8onWUUb8HXNwhPqasz4SZvmjCCXmeGrZk2C/JP9hg==
X-Received: by 10.31.107.135 with SMTP id k7mr8987043vki.119.1478625038433;
Tue, 08 Nov 2016 09:10:38 -0800 (PST)
MIME-Version: 1.0
Received: by 10.103.67.70 with HTTP; Tue, 8 Nov 2016 09:10:38 -0800 (PST)
From: user@gmail.com>
Date: Tue, 8 Nov 2016 09:10:38 -0800
Message-ID: <CAHHVjUVTJefrH-i33333333333333yLwvbAvZSLdiFWObg0KZ-98a3yYA@mail.gmail.com>
Subject: 22
To: user@careexchange.in
Content-Type: multipart/alternative; boundary=001a133307da0540cd38a3

 

Solution –

Disable Recipient Verification on Sophos UTM 9 Email Protection.

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About Satheshwaran Manoharan

Satheshwaran Manoharan is an Microsoft Exchange Server MVP , Publisher of CareExchange.in Supporting/Deploying/Designing Microsoft Exchange for some years. Extensive experience on Microsoft Technologies.

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