bounce handling

Bounce message notification from Protonmail: 550 5.1.1 Recipient address rejected: Address is not configured to receive emails Status code 5.1.1 is a permanent failure: Bad destination mailbox address. AWS SES also classifies this as a permanent failure, but XenForo classifies it as a Soft...

Error S3150 frequently occurs with Microsoft email domains. Its not a real bounce, but a notification that the admin needs to take action. 550 5.7.1 Unfortunately, messages from [xxx.xxx.xxx.xxx] weren't sent. Please contact your Internet service provider since part of their network is on our...

Email bounces can be Temporary / Transient or Permanent. With Temporary bounces no direct action is taken, until a certain number of bounces is reached. In most cases its a matter of inbox_full, which is resolved after the user clears their inbox. Often this takes weeks to a month to clear up...

Some prime examples of dead email domains are: myspace.com (dead since 2009) viola.fr (dead since 2016) wanadoo.co.uk (dead since 2017) orange.net (dead since 2017) love.com (dead since 2022) Emails to these dead email domains result in soft bounces, while these should be hard bounces. Of...

This clearly should be a hard bounce: Action: failed Final-Recipient: rfc822; xxx@tutanota.com Diagnostic-Code: smtp; 550 5.7.1 <xxx@tutanota.com>: Recipient address rejected: Recipient not found Status: 5.7.1

Clearly this should be a hard bounce: Action: failed Final-Recipient: rfc822; xxx@comcast.net Diagnostic-Code: smtp; 550 5.2.0 <xxx@comcast.net> - Account Closed, Please Remove Status: 5.2.0

This common Gmail bounce message is processed as a Soft Bounce: Action: failed Final-Recipient: rfc822; xxx@gmail.com Diagnostic-Code: smtp; 552-5.2.2 The recipient's inbox is out of storage space and inactive. Please 552-5.2.2 direct the recipient to 552 5.2.2...

This bounce message is incorrectly processed as a Soft Bounce: Action: failed Final-Recipient: rfc822; xxx@evansinc.com Diagnostic-Code: smtp; 550 permanent failure for one or more recipients (xxx@evansinc.com:550 5.4.1 Recipient address rejected: Access denied. For more information see...

When a user marks an email message as spam this results in a Complaint / Abuse report. This report is sent to the email inbox configured in DMARC. Or in the case of AWS SES configured by SNS. As XenForo does not have a separate setting for complaints / abuse, this should be configured to the...

I have about 1k email bounces with the following bounce message after a member replied to an old mega thread: These are incorrectly classified as soft bounces, while these should be hard bounces. This specifically pertains to Yahoo and AOL related email providers, as well as an array of...

Hi everyone - we have spent some time on the forums here but have not come up with a good answer. We seem to be outgrowing our Google Workspace accounts for outbound email handling as we occasionally bump up against Google's outbound daily limit (2k messages per day). In order to prepare for...

Hey, I'm configuring the Bounce Handler with IMAP and TLS but the execution throws an error: Stack trace #0 src/vendor/laminas/laminas-mail/src/Protocol/Imap.php(138): Laminas\Mail\Protocol\Imap->nextLine() #1 src/vendor/laminas/laminas-mail/src/Protocol/Imap.php(100)...

I have set up a new XenForo forums, and have set up outbound SMTP through my email system that I control. I am now trying top set up the Automated bounced and unsubscribe email handlers, and and am getting Auth errors. I have tried IMAP TLS, IMAP (non encrypted) as well as POP3 non-encrypted...

When a new user registers with an erroneous email address, the server will receive a bounce message, xenforo will process it and then... ...nothing happens. If the user requests another activation email then it is sent. Even though the email service has already told us that there should not...

When you use Amazon SES for email sending, you can setup Simple Notification Service (SNS) to receive notifications for bounces, delivery, complaints. SNS also makes grey-listing visible which is important. These email bounce messages can be fetched by XenForo by IMAP. Here is such bounce...

Please do not forget bounced email processing. The absence of bounced email processing in vbulletin has led to a large number of boards being blacklisted as a spammer. As a result their members do not receive emails from the board. vbulletin is one of the largest spammers on the internet...