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.

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25
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7answers
16k views

How to stop spammers from sending spam as me

We've starting to receive bounced spam messages and the sender is one of our email address. We know that we don't send spam from that address. We've tried changing the password but we're still ...
3
votes
3answers
14k views

How to disable “sender non-delivery notification” in postfix?

I want postfix to stop sending non-delivery notifications to my local account, here is example from my log 17:47:08 A727B62C6F61: message-id=<20121124174708.A727B62C6F61@mail.***********> 17:...
1
vote
2answers
2k views

Forwarding only bounce messages to a different SMTP server

I have a Postfix SMTP server that sends transactional emails from a web service. These messages use VERP for the return path, so bounces go back to an address like this: bounce-7232-useremail=...
1
vote
1answer
52 views

Originating (non-critical) emails from a “less-trusted” host

Background We have a webapp running on webapp.example.com that (amongst other things) sends messages by email from time to time. These messages are non-critical: whilst we would like to make a best ...
7
votes
1answer
576 views

Avoid creating backscatter on a Postfix forwarding server

I run a Postfix server that hosts a small, alias-based mailing list. Let's say people@myserver forwards to alice@someprovider and bob@someotherprovider. Now, alice@someprovider might use a more ...
2
votes
1answer
10k views

telnet unable to connect to remote host

I have installed postfix and devcot on one of my live servers to send bulk mail (system messages on sign-up, wrong passwords etc). I use the php_imap function to check bounces and flag those email id'...
1
vote
2answers
2k views

E-Mail Bounce Management

we want to improve our mailing lists by handling all the bounces we get. As I saw there are different approaches. One checks the badmail folder in IIS mailroot folder. Others check a email account ...
1
vote
3answers
511 views

How to make sure that in case of our mail server being unreachable (connection down) mail still gets queued and resent once it's back up?

We have had some issues with losing internet connection once in a while. Normally that would mean our mail server is unreachable and incoming email is bouncing. We've set up MX Backup (second MX ...
5
votes
3answers
100 views

What to do if one doesn't want to receive email bounces?

Background—the standards RFC 5321 §4.5.5 states: All other types of messages (i.e., any message which is not required by a Standards-Track RFC to have a null reverse-path) SHOULD be sent with ...
2
votes
2answers
11k views

reason: 403 4.7.0 TLS handshake failed

Sending email to one particular domain, I get the following error: ----- The following addresses had permanent fatal errors ----- <> (reason: 403 4.7.0 TLS handshake failed.) ----- ...
1
vote
1answer
327 views

How to customize email FROM header with an email from a different domain?

How can I customize the mail FROM header in our Email Marketing Application , to enable our customers to specify their OWN email ( from their domain ) . Currently the customer specify his own domain ...
1
vote
1answer
787 views

Exim managing bounced and failed messages

What is the best way to handle bounces and immediate failures with Exim? An email sent to a large mailing list will generate a large number of immediate failures as well as bounces. I'd like to ...
1
vote
2answers
398 views

How to instruct Postfix to wait until the LDAP server is back again?

Sometimes, my LDAP server is not responding for a couple of seconds and when Postfix does its lookup, it bounces with an error: "Invalid user specified". Is there a way to force the lookup to be ...
0
votes
1answer
621 views

IIS6 SMTP service attempts to send mail to domain root A records instead of MX, why?

Getting some random bouncebacks on e-mail processed through an IIS6 SMTP service acting as a smart host (outbound mail gateway). Configuration example... For domain example.com we there is a Root A ...
0
votes
1answer
228 views

SMESERVER: Mail not receiving, 550 v=spf1 a -all

SMESERVER install has been working find for an age then this morning "The error that the other server returned was: 550 v=spf1 a -all", can anyone 'point' me in the right direction to resolving this ...
0
votes
1answer
5k views

Email Bounces: Sender address rejected: Domain not found

I'm getting the error below when sending mail via smtp through google apps mail. Can anyone see why I get this error? As far as I can tell my domain exists! THIS IS A WARNING MESSAGE ONLY. ...
-2
votes
1answer
105 views

Does gmail avoid from some emails even to be in spam box? [closed]

Does gmail avoid from some emails even to be in spam box? Thanks in advance