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Email Troubleshooting Guide

Email Troubleshooting Guide

Brogan

XenForo moderator
Staff member
#1
Brogan submitted a new resource:

Email Troubleshooting Guide - Information and support related to troubleshooting and resolving failed email delivery

The aim of this guide is to provide information and support related to troubleshooting and resolving failed email delivery and other email related issues.

For general information on the various email options, see this page of the Help Manual: https://xenforo.com/help/email/

For a detailed explanation of the automated bounce handling, see this thread: https://xenforo.com/community/threads/automated-bounce-email-handling.78137/


The two main options related to email...
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Brogan

XenForo moderator
Staff member
#2
Brogan updated Email Troubleshooting Guide with a new update entry:

Email Delivery Affecting Individual Members

If individual members are not receiving email, it is unlikely that there would be ACP Server Error Log entries and it could be due to several reasons.

1. A misunderstanding with regards to how certain emails are sent; in the case of unread threads for example, only a single email is sent until the member visits the thread and the newest post has been read or the thread is marked as read.

2. The member account status could have been automatically changed to Email invalid (bounced)...
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Brogan

XenForo moderator
Staff member
#3
Brogan updated Email Troubleshooting Guide with a new update entry:

Email Delivery Affecting All Members

The first thing to establish is whether there are any ACP Server Error Log entries related to email delivery.
That can be checked in the ACP -> Tools -> Server Error Log


No ACP Server Error Log Entries
If there are no errors, this means XenForo has successfully processed the emails, handed them off to the server and they have been accepted.
From that point on, XenForo is no longer involved so the server mail log (typically in /var/log/maillog or similar) would have to be...
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Brogan

XenForo moderator
Staff member
#4
Brogan updated Email Troubleshooting Guide with a new update entry:

Default (PHP) Email Errors

These are some of the most commonly occurring errors related to email delivery when using the Default (PHP) method.

Checking the server mail log (typically in /var/log/maillog or similar) may help to identify the specific cause. If root access is not available (typically with shared hosting), contact your host.

In most cases, this is not something which can be resolved within XF and investigation and resolution will be required by the sysadmin or host at the server level, except...
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Brogan

XenForo moderator
Staff member
#5
Brogan updated Email Troubleshooting Guide with a new update entry:

SMTP Email Errors

These are some of the most commonly occurring errors related to email delivery when using the SMTP method.

In most cases, this is not something which can be resolved within XF and investigation and resolution will be required by the sysadmin or host at the server level, except where specifically indicated.


1. Could not open socket.
Code:
Zend_Mail_Protocol_Exception: Queued, Email to member@localhost.com failed: Could not open socket -...
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