We have collected information about Postfix Sender Non-Delivery Notification for you. Follow the links to find out details on Postfix Sender Non-Delivery Notification.
https://serverfault.com/questions/920150/how-to-disable-sender-non-delivery-notification-in-postfix
It is strongly suggested that you do not disable NDR responses on any mail server. However, it is possible to disable NDR responses in Postfix if you would like to. Let me explain. Your urge to disable Non-Delivery Notifications (NDN) aka bounces messages probably arises from a good intent to avoid sending backscatter. Still, you need to be able to inform your own users if they are sending mail to …
https://www.howtoforge.com/community/threads/postfix-send-sender-non-delivery-notification-for-not-existing-domain-alias-account.70707/
Aug 05, 2015 · Normally my Postfix correctly deny not existing mailboxes and don't send such messages. But in my case the destination address aims to an domain alias and Postfix accept the message at first step and manually send a "sender non-delivery notification", because it recognize the target isn't available after he really replace the domain.
https://ubuntuforums.org/showthread.php?t=2234683
Jul 23, 2014 · Smtp2go use the "from address" to know if you can send an email or not. But in the case of the non-delivery notification, it seems that postfix is not setting anything in from: Jul 16 11:12:27 batz postfix/bounce: 9F1913017EE: sender non-delivery notification:
https://www.linuxquestions.org/questions/linux-software-2/opensuse-postfix-error-sender-non-delivery-notification-email-bounced-4175469011/
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http://postfix.1071664.n5.nabble.com/Don-t-send-quot-sender-non-delivery-notification-quot-to-one-sender-td94736.html
We have a DMARC policy that forces DKIM headers on all mail and when Postfix sends a non-delivery notification to this bulk mail sender (a fake e-mail alias) it fails because of our DMARC policy. >> >> I have set notify_classes= to not receive any e-mails about errors/bounces but it looks like the non-delivery notifications still occur.
https://talk.plesk.com/threads/configure-postfix-bounce-notification-recipient.341062/
Nov 23, 2019 · The message to gmail bounces, and then it looks like Postfix tries to send the non-delivery notification to " [email protected] ". I have mail disabled for all of my virtual hosts; they do not accept incoming mail, and in any case no such …
https://www.digitalocean.com/community/questions/postfix-send-email-but-it-s-not-received
Sep 17, 2014 · It looks like gmail indeed did receive it. Maybe they are blacklisting your ip. Check your mail logs to see if you are getting 421 or 550 errors coming back from google.
https://devanswers.co/postfix-statusbounced-unknown-user-user/
I was experiencing a problem sending mail to an address at my own domain. I wanted my PHP app to send notification emails to [email protected] but they kept bouncing with “status=bounced (unknown user: “user”)”. Accessing the log: sudo tail /var/log/mail.log -n 200 This will …
https://sourceforge.net/p/postfixadmin/discussion/676076/thread/dc872364/
Aug 04, 2016 · Copy-n-paste from forum info : This is not a general Postfix help forum - this is for the separate package PostfixAdmin which configures/maintains virtual domains & mailboxes using Postfix (plus MySQL or PostgreSQL, optionally maildrop, and Courier or Dovecot). For Postfix help you should head over to postfix.org and check out the Postfix mailing lists.
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