Hello!,
We are using Exchange Server 2010 since last so many years. We use POP3 connector. Since last 2 weeks we are not able to send emails to all Gmail Users.
We get below error message on our server. Could anybody help? Thanks in Advance.
mx.google.com gave this error:
This message does not have authentication information or fails to pass authentication checks. To best protect our users from spam, the message has been blocked. Please visit https://support.google.com/mail/answer/81126#authentication for more information. 199si1306183pfv.23 - gsmtp
Your message wasn't delivered because the recipient's e-mail provider rejected it.This message does not have authentication information or fails to pass authentication checks. To best protect our users from spam, the message has been blocked. Please visit https://support.google.com/mail/answer/81126#authentication for more information. 199si1306183pfv.23 - gsmtp
Diagnostic information for administrators:
Generating server: NIVOSBS2011.nivoctrl.local
shailendra.neema@gmail.com
mx.google.com #550-5.7.26 This message does not have authentication information or fails to 550-5.7.26 pass authentication checks. To best protect our users from spam, the 550-5.7.26 message has been blocked. Please visit 550-5.7.26 https://support.google.com/mail/answer/81126#authentication for more 550 5.7.26 information. 199si1306183pfv.23 - gsmtp ##
mx.google.com #550-5.7.26 This message does not have authentication information or fails to 550-5.7.26 pass authentication checks. To best protect our users from spam, the 550-5.7.26 message has been blocked. Please visit 550-5.7.26 https://support.google.com/mail/answer/81126#authentication for more 550 5.7.26 information. 199si1306183pfv.23 - gsmtp ##
Original message headers:
Received: from NIVOSBS2011.nivoctrl.local ([192.168.1.50]) by
NIVOSBS2011.nivoctrl.local ([192.168.1.50]) with mapi id 14.01.0438.000; Mon,
1 Jun 2020 11:32:01 +0530
From: "Shailendra Neema" <neemas@nivocontrols.com>
To: "shailendra.neema@gmail.com" <shailendra.neema@gmail.com>
Subject:
Thread-Index: AdY32irXRiPBsJBAS86NTwJgVKk6Hg==
Date: Mon, 1 Jun 2020 06:02:01 +0000
Message-ID: <A32CB71D82A08249AE7A9BC6587CEFEC033AB643CA@NIVOSBS2011.nivoctrl.local>
Accept-Language: en-GB, en-US
Content-Language: en-GB
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
x-originating-ip: [157.34.55.64]
Content-Type: multipart/alternative;
boundary="_000_A32CB71D82A08249AE7A9BC6587CEFEC033AB643CANIVOSBS2011ni_"
MIME-Version: 1.0Shailendra Neema