Zimbra error 421-4.7.0 gsmtp

-

Introduction

Encountering the Zimbra error "421 4.7.0 GSmtp" can disrupt your email communication and cause frustration. This error typically indicates issues related to Gmail's SMTP server, which can affect the delivery of emails sent from your Zimbra server. 

In this article, we will delve into the causes of the "421 4.7.0 GSmtp" error and provide step-by-step solutions to help you resolve it, ensuring smooth and uninterrupted email communication.

zimbra code error 421-4.7.0 This message does not have authentication information or fails to pass 421-4.7.0 authentication checks Gmail SMTP Error Codes
Jun 22 11:17:56 mta postfix/smtp[16523]: B67511C61EE: host gmail-smtp-in.l.google.com[74.125.23.27] said: 421-4.7.0 This message does not have authentication information or fails to pass 421-4.7.0 authentication checks. To best protect our users from spam, the 421-4.7.0 message has been blocked. Please visit 421-4.7.0  https://support.google.com/mail/answer/81126#authentication for more 421 4.7.0 information. f7si5281662plm.92 - gsmtp (in reply to end of DATA command)

 How to solve problem ( recommend of google)

  1. Sign messages with DKIM
  2. Publish an SPF record
  3. Publish a DMARC policy
My opinion just "Sign messages with DKIM and Publish an SPF record" without Publish a DMARC policy.
Ref to check DKIM and spf use dig command
dig -t txt  C333XXX-11E4-B123-25B12331CXXXA1._domainkey domain-your.com
Or ref to check website online.

Conclusion

Resolving the "421 4.7.0 GSmtp" error in Zimbra is essential for maintaining seamless email communication. By understanding the causes and following the solutions provided in this guide, you can effectively address this issue and prevent it from recurring. We hope this article has been informative and encourage you to explore our website for more tips and best practices in managing your Zimbra email system.thank you for reading the huuphan.com page!

Comments

Post a Comment

Popular posts from this blog

zimbra some services are not running [Solve problem]

-
How to solved zimbra some services are not running. That after, to installed zimbra mail server. The display a some admin console status red in environment multiple server ( zimbra ldap, zimbra mailbox, zimbra mta etc.). Link to below you maybe likes: How to install and configure zimbra multi server.   How to restrict to user sending mail on zimbra 8.6. How to Restrict Sending to Distribution list in zimbra mail. How to change last login time for all accounts in zimbra ldap. How to zimbra reject authenticated sender login mismatch. Error zimbra some services are not running as bellow Step by step guide the solve problem zimbra some services are not running the following: To restart and enable cron service the permanently. service crond restart chkconfig crond on Opening rsyslog.conf file and uncomment the following. vim /etc/rsyslog.conf Uncomment these two lines $modload imupd $UDPServerRun514   To restart and enable rsyslog service the permanently. servic
Read more

How to install php7 on centos 6: A Step-by-Step Guide

-
Introduction Learn how to install PHP7 on CentOS 6 using the Remi repository with our detailed step-by-step guide. Includes instructions for setting up PHP7 for Nginx with PHP-FPM and PHP-MySQL. PHP7 brings significant improvements in performance and new features compared to its predecessors. If you're running CentOS 6 and looking to upgrade to PHP7, this guide will help you through the installation process using the Remi repository. We will cover the basic steps and provide additional instructions for setting up PHP7 for Nginx. Prerequisites Before you begin, ensure you have the following: A CentOS 6 server Root access or a user with sudo privileges Step 1: Update the System Start by updating your system to ensure all existing packages are up to date. Copy code yum update -y Step 2: Install Required Packages Install wget and yum-utils to facilitate the installation of the Remi repository. Copy code yum install wget yum-utils -y Step 3: Add the Remi Repository Download and insta
Read more

Bash script list all IP addresses connected to Server with Country Information

-
Introduction Learn how to create a Bash script to list all IP addresses connected to your server. This comprehensive guide covers everything from basic to advanced examples, helping you master server monitoring with Bash scripting. This script is designed to list all IP addresses connected to your server, retrieve geographical information for each IP using ipinfo.io , and display the results in a clean format. This guide will walk you through the script, explaining each part in detail, and ensuring you understand how to implement and use it effectively. What is Bash? Bash (Bourne Again Shell) is a Unix shell and command language written by Brian Fox for the GNU Project as a free software replacement for the Bourne shell. It has since become the default login shell for most Linux distributions. Bash can execute commands, read and execute commands from a file, and provide constructs for condition testing, looping, and functions. Prerequisites A Linux-based server with administrative pri
Read more