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Questions tagged [email-bounces]

email bounces are messages that are delivered to the nominated postmaster account on an email server to indicate a problem delivering the mail to one or more recipients.

email bounces are messages that are delivered to the nominated postmaster account on an email server to indicate a problem delivering the mail to one or more recipients.

Bounces can result from unknown users, failed mail servers, or other network or configuration issues.

395 questions
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451 #4.1.8 Domain of sender address does not resolve

When sending out email to xxx@terremark.com through my own SMTP server (mail.sarit.be), the receiving mail server replies with: 451 #4.1.8 Domain of sender address does not resolve Judging from my postfix log, all of the receiving MX…
user131368
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Make Exim send bounces to postmaster instead of the sender, for non-local sender

I have a few e-mail aliases that forward to external hosts. Currently, if the external host rejects a message, Exim generates a bounce message and sends it to the original sender. This is bad because if the external host rejects the message as spam…
Reid
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Has anyone setup a temporary webmail server to catch emails during an outage?

I've recently been in a situation where an Exchange email server went down and we weren't able to bring it back online after 48hrs, so some incoming emails bounced. Also, users weren't able to send or receive emails for a few days, which was a sore…
zippy
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SPF problems with Google Apps

I currently have an SPF record with a hostname of @ that is: v=spf1 mx ip4:x.x.x.243/32 include:_spf.google.com include:amazonses.com ~all I also have another record of" spf2.0/pra mx ip4:x.x.x.243/32 include:_spf.google.com include:amazonses.com…
mahle
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Stop spoof emails in Google Apps

Desperately need some help here. I've been using Google Apps for my domain (2qubed.co.uk) for over 2 years now with no problems at all until recently. For the past few months I have been getting lots of bounced emails from my domain that i never…
hems77
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Postfix - Send only rejected mail through smarthost

I'm trying to improve the mail delivery for an organisation I work with (no spam). We have been using our normal mail service's smtp server as a smarthost for delivery, but recently they have blocked the account because it was sending too much…
Jords
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Best practices for mass email platform

I am in the process of setting up mass email service. My question is: what are the best practices to achieve maximum deliver-ability. More precisely - what should I do/know to prevent spam filters from blocking the emails (the emails are not…
Niro
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Bounce backs from web-generated e-mails are missing

We use Google Apps to host my company's mail. On our website, we send some e-mails on behalf of our users. In those e-mails we include lines like this: Return-Path: Sender: Sending the messages…
JerSchneid
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Is it a DMARC failure if disposition=none & dkim=fail?

When I get one of these DMARC reports from Google is it because there is a problem? Or is it standard protocol. I am curious because I sent one test email and got this DMARC report to abuse@orcaaccounting.com. I just want to make sure everything…
Powerhouse6666
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Message-ID of delivery report is equal to original mail

I discoverd that the delivery status report has the same message-id as the original mail. Here is the text of the delivery report: Incoming DSN message: From: Mail Delivery Subsystem To: info@foo.de Subject: DELAY: …
guettli
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Postfix: do not create bounce message for virtual_alias_maps with remote servers

I am using virtual_alias_maps to forward mail to remote mail servers (GMail, icloud). I have spam prevention in place myself (SPF checks, Before-Queue Content Filter etc), but often enough spam will be accepted by Postfix, gets enqueued and then the…
blueyed
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Postfix: Script to difference hard vs soft bounces

I followed the steps mentioned in the forum - how to collect bounces for triggering a script upon a bounce receipt. Now, I would like to classify the bounce depending on the status. It would be deferred/delivered/etc.. This would categorize them as…
Hariprasauth Ramamoorthy
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Zimbra server compromised - how to investigate

We have a zimbra email server and one of the email accounts was compromised. The problem we have now is that a lot of spams are sent from that server and we cannot identify which account is compromised. In the mailq we can only see the from email,…
Milos Cuculovic
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How do I find and prevent local mail handling?

I did an apt-get update of a server "myserver.com" recently and now all emails sent from that server to email@myserver.com bounce with "user unknown". I believe that the server is trying to deliver to local users, but I am not sure why it changed to…
Ben Holness
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Outgoing email errors

A couple of months ago some of our emails got hacked (they got hands on the passwords) and they sent out 1000+ spam emails from those specfic accounts to random adresses. Now months later after having the hack problem fixed, the email accounts still…
Filip Huysmans
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