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.

learn more… | top users | synonyms

1
vote
0answers
9 views

Prevent misdirected bouncebacks from forwarding server

Note: This question is a duplicate of Avoid creating backscatter on a Postfix forwarding server, for which the only answer was "sorry, nothing you can do", but I provide more detail here, consider ...
1
vote
0answers
8 views

Email address tagging doesn't work with virtual mailboxes in postfix

I have my own email server, and I'd like to be able to use dynamic email address tagging. I added the recipient_delimiter = +- directive to my config and restarted postfix, but now if I email bob+...
1
vote
2answers
56 views

Hotmail blocks my SMTP server [duplicate]

Recently i discovered that hotmail has blocked my SMTP once again. The error code is Diagnostic-Code: smtp;550 SC-001 (COL004-MC5F28) I only send for my web based online 2d text game : http://www....
0
votes
1answer
17 views

Google mail servers returing Deffered: 450-4.2.1. for no apparent reason

We have a problem with our sendmail: gmail is always returning the "Deffered: 450-4.2.1." error. I checked all available documents and help articles, but it only confuses me. I am testing this on my ...
0
votes
0answers
16 views

Disable bounce messages to original sender & forward it to another address via postfix

I want configure my mail server to prevent all bounce messages to be sent back to the original sender & forward those bounce messages to the postmaster instead. (Don't want to discard all these ...
0
votes
0answers
29 views

Why won't my server receive emails from my own address, sent by Mailgun?

I'm managing a reseller Hostgator account, which runs cPanel, and I'm not sure exactly which mail daemon/server they're running. example.com and example.net are on the same account. The email ...
0
votes
1answer
47 views

451 5.7.3 STARTTLS is required to send mail Exchange 2013 Hybrid

Certificate from GoDaddy is in place, I have removed esmtp inspection from our Cisco ASA, and hybrid mail is flowing from Office 365 to our on prem Exchange 2013 server. When trying to send mail to a ...
1
vote
1answer
66 views

How to set up mx records

So I bought a new domain name from GoDaddy and pointed the domain to my VPS IP Address which works fine. [Please note, the VPS is not hosted with GoDaddy, just the domain name.] However, I noticed ...
0
votes
0answers
41 views

MessageLabs Blocking Email but Not Our Provider

My coworker and I am at a loss here. MessageLabs is blacking our client's emails from sending. However, MessageLabs isn't our anti-spam provider anymore. I checked SonicWALL to see if they're still ...
1
vote
1answer
48 views

Domain is being used for spam - what to do?

I recently started to receive postmaster and mailerdaemon mails about undelivered mail that have been sent from my corporate domain. It's default spam: attached files/invoices/etc. and it's not coming ...
1
vote
1answer
32 views

Setting FROM Email Address in FREE SmarterMail 15 for Delivery Failure Notices

I have Free SmarterMail 15 setup on a Windows Server to allow CDONTS and php mail to send emails from contact forms. When the to email address is invalid, a delivery failure notice is sent to the ...
0
votes
1answer
38 views

setup posfix mail server - allow local emails (error 550 5.7.1)

I have from on website and submiting it should sens question email to support on behalf of customer (puting his email addres as sender) Problem is that support does not recieve email but insead ...
2
votes
1answer
127 views

550 Verification failed Sender verify failed (in reply to RCPT TO command)

Note: email addresses, domains, and ip addresses have been changed to protect the innocent Current Error: Apr 28 23:47:32 vps01 postfix/smtp[8012]: 2A03D6285EF9: to=<brian@somedomain.com>, ...
0
votes
0answers
5 views

Gmail relay server not working from one sender 550-5.7.1 [duplicate]

I've got a postfix server set up to relay emails sent to my personal domain to a gmail account. It's been working fine for everything until today when a sender reported that all their emails are being ...
1
vote
2answers
55 views

Bulk emails - what to do with “over quota / mailbox full” undeliverable emails?

We send out newsletters / bulk mail (double opt-in of course). We automatically delete hard bounces (mailbox unavailable, user unknown, host unknown...) right away from our mailing lists. But a lot ...
0
votes
1answer
51 views

554 5.7.1 unknown recipitent [closed]

I'm trying to send an email to M@Danielmadison.co.uk (there are no attachments being sent if that would affect anything) and i keep getting the following message: Delivery to the following recipient ...
1
vote
1answer
28 views

How to properly setup DNS for subdomain used only for sending

I am using mailgun to sent our emails. It works fine in most of cases but recently I get bounced with: 450 4.1.8 Sender address rejected: Domain not found My setup is: xyz.com has mx setup for gmail....
1
vote
0answers
221 views

Not able to send mail of Hotmail with your own postfix

I purchased DigitalOcean VPS in that installing cwp.admin open source panel. Also all configuration completed like postfix,rDNS,DKIM,DMARC,SPF,DNS Settings,etc... My problem is not able to send mail ...
2
votes
1answer
40 views

Catch All Email for Old Domain?

We've been on our new domain for over a year now and we have removed our redirects from the individual accounts but my boss wants to have a catch all email account so just in case there are messages ...
1
vote
1answer
54 views

forwarding mail loop in postfix

recently i configured my postfix server with dovecot, sasl and ldap according some tutorials. it works fine indeed but always when i receive email it disappears after literally 5 minutes, postfix says ...
3
votes
1answer
119 views

Delivery Status Notification (Failure) => 550 SPF: x.x.x.x (IP address) is not allowed to send mail from <our-domain.com>

Technical details of permanent failure: Google tried to deliver your message, but it was rejected by the server for the recipient domain <repipients-domain.com> by <repipients-domain.com>. ...
0
votes
0answers
56 views

Postfix bouncing emails submitted through pipe

I have a Postfix with a piped content filter which tries to locally deliver the messages before sending them out, resulting in a bounce notification for each event. According to the Postfix ...
0
votes
1answer
32 views

Exchange 2010 email via OWA still gives ExRecipNotFound

I had an email account: info@product.com. In exchange I had a distribution group product@mycompany.com. This distribution group had a few users. My DNS MX records pointed to my exchange 2010 server....
0
votes
0answers
17 views

postfix outbound relay, only permit email to or from mydomains

How can I allow Postfix to: send emails from any domain to my domain, or from my domain to any domain, but reject emails from any domain to any domain. Example: mydomains = example.org, example....
2
votes
1answer
49 views

Avoid Mail Delivery System Bounce Forward [closed]

I have the following mail setup: This is what happens at the numbered stages: some spam-address (which actually does not exist) sends spam to info@xyz.org the info@xyz.org has an auto-reply ...
0
votes
0answers
35 views

How do I configure the listener binding address for python 2.7 smtplib running in a windows environment?

I am setting up an application called openemm which uses the python 2.7 smtplib to handle smtp transactions. My outgoing mail works fine but smtplib is not responding to incoming requests on port 25 (...
1
vote
1answer
88 views

Postfix - bounce messages are not sent to postmaster

I ban and reject some spammer domains/IPs, via: smtpd_recipient_restrictions = check_sender_access regexp:/etc/postfix/client_checks, ... client_checks file: /\@domain\./ REJECT and it works ...
1
vote
0answers
63 views

Webserver to send emails from Postfix

I have a problem with my web server sending out email from websites through postfix. I have server that is running Ubuntu 12.04.5 and using Apache webserver. I have installed virtualmin on the server ...
-1
votes
1answer
49 views

Email bounce notification for an email account that doesn’t exist in exim mail server

Need help with Exim mail server setting. I want to set the exim mail server to trigger an email bounce notification for an email account that doesn’t exist. For example: abc@abc.com - should bounce ...
0
votes
2answers
95 views

Postfix sent mails are bounced or go to spam

I recently tried setting up a mail server to be able to send mail for the websites I host with apache. At first I tried to work with exim but I was overflown with error messages and mails I tried to ...
6
votes
1answer
648 views

How do I get off Mimecast's greylist?

Emails from our servers sent to Mimecast are being "temporarily rejected" due to greylisting. Mimecast has docs on this; they say that every time they see a unique IP and sender, they greylist the IP ...
0
votes
1answer
106 views

hMailServer and reverse DNS

I have an hMailServer installation on a Windows 2012 server VM and need to properly set up reverse DNS + the mail server in order to avoid getting e-mails bounced back from certain big providers, ...
1
vote
0answers
20 views

Email delivery status

I am trying to track an email. I use mutt so that I can edit the email headers directly before sending, and I added: X-Confirm-Reading-To: me@email Disposition-Notification-To: me@email Return-...
0
votes
1answer
43 views

Postfix: find out why mail bounces

My otherwise pretty well working postfix mail server is refusing to deliver a single mail with attachment. Unfortunately i don't have the error message available which was sent to the sender. But here ...
0
votes
1answer
32 views

How to troubleshoot emails from some hosts not being received without error messages

I am trying to troubleshoot the server I mantain. It is a Centos 6.6 with Plesk 12.0.18, it uses Qmail and Courier as email services from what I can see. Now in general all emails work succesfully ...
2
votes
1answer
79 views

sendmail cant send mail - Centos6/7

I have a newly minted CentOS 6.7 box to set up sendmail on. It seems sending email but not really, no idea whats the issue could be. What I did: yum install sendmail sendmail-cf sendmail-doc ...
1
vote
1answer
40 views

Required Mailboxes

Regarding this answer http://serverfault.com/a/134814 What are the minimal mailboxes required for a domain? Currently I only specify these mailboxes: root@ webmaster@ postmaster@ admin@ domain@ ...
0
votes
0answers
39 views

Mail spoofing or server infected

Today I received this email in my inbox. 2 IP appear in "FROM" in the body email. One of them is IP of my hosting provider. But is not the IP of my website neither from I send emails . it might be ...
0
votes
3answers
112 views

Exchange 2013 Account experiencing weird longterm bouncing issue

We recently migrated one of our clients to Exchange 2013 from Google Apps, since the migration a single user has been experiencing inexplicable bounces emails and calendar updates. Some of the ...
0
votes
1answer
224 views

Postfix on server bouncing emails sent to same domain emails, external domains working

My @example.com email is hosted with Google Apps. I am able to send & receive email to all 4 accounts I have created for @example.com. I also own www.example.com. The issue is not being able to ...
5
votes
1answer
8k views

IP address is not allowed to send mail from DOMAIN

Today I heard that a customer can't send email to us. He received the following error: < #5.5.0 smtp;550 [ipaddress] is not allowed to send mail from [domain name]. Please see http://www.openspf....
3
votes
1answer
117 views

Dynamically limit postfix attachment size

For a project I am currently working on, we received a requirement for a 'dynamic' mail attachment size limit. For postfix (which we currently use) this would be easily implemented using the ...
0
votes
0answers
87 views

Exchange server: Why do a couple users have random numbers at the end of their “Windows domain\user name” and is this causing problems?

Background on the problem: I work for a company which is a Panasonic Partner. As a part of this program, Panasonic regularly sends out "Partner Alerts" to everyone who is signed up to receive them. We ...
0
votes
1answer
199 views

Why does reject_null_sender in iredmail rejects valid bounces?

The reject_null_sender plugin in iRedMail indicates its purpose as: Reject message submitted by sasl authenticated user but specifying null sender in 'From:' header (from=<> in Postfix log). ...
1
vote
1answer
24 views

Forget forwarded emails delivery errors

I have problem with configuring Sendmail, I've read a lot of topics on the net about similar problems but I didn't found a good answer for this scenario. Main problem is that my server has poor ...
2
votes
2answers
117 views

Spam mail forwarded through my server using valid user

I am getting "Undelivered Mail Returned to Sender" messages. The relevant mail messages are being forwarded using a valid user (mike@proactech.com) on my server (server1.nbicharts.com). I control ...
2
votes
1answer
50 views

Can IP reputation be affected due to automatic forwarding?

I am hitting a dead wall with the support team of my email hosting provider. The IP they assigned me was blacklisted and so sending emails to AOL.co.uk end up getting rejected. After several emails ...
0
votes
1answer
45 views

Sender IP in blacklist [duplicate]

When we send mails to AOL accounts, they are rejected and bounce back. After checking our IP on blacklists, there seems to be two lists on which our IP appears blacklisted. This comes as a surprise to ...
0
votes
1answer
519 views

Outbound SMTP email not being delivered, but still disappearing from the queue and pickup folder

After setting up my smtp server on a Windows 2012 server r2 on port 587. I tested the email functions by creating a text file labeled email with the following code inside: From:admin@mydomain.com to:...
0
votes
0answers
27 views

Figuring out why prodigy.net DNSBL is flagging me? [duplicate]

For the last 10 days, I've been unable to send mail to sbcglobal.net addresses from brinckerhoff.org (192.81.130.145). The responses from the sbcglobal.net MX (which turns out to be a prodigy.net ...