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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2
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1answer
30 views

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

Note: email addresses changed Current Error: Apr 28 23:47:32 vps01 postfix/smtp[8012]: 2A03D6285EF9: to=<brian@somedomain.com>, relay=mail.somedomain.com[162.144.93.233]:25, delay=42, ...
0
votes
0answers
4 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
33 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
34 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
19 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 ...
1
vote
0answers
98 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
25 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
41 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
75 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
34 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
29 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 ...
0
votes
0answers
12 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, ...
2
votes
1answer
30 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
25 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
54 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
56 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
43 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
75 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
452 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
68 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
19 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 ...
0
votes
1answer
33 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
29 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
68 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
39 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
32 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
90 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
147 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 ...
3
votes
1answer
4k 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 ...
3
votes
1answer
97 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
79 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
172 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
22 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
110 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
48 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
42 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
371 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 ...
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 ...
0
votes
1answer
18 views

Do spam impersonators impact my server's reputation?

Recently I opened my server's webmaster email inbox and found 32 "Delivery status notification failed" emails reporting the failure of the delivery of 32 emails I did not send. After some ...
1
vote
0answers
344 views

SMTP error : Remote host said: 550 5.7.1 At least one FROM header address not allowed to send mail from IP ADDRESS

We are developing an email sending app, and we allow our users to specify the From: header their emails will be sent from. Let's say our domain is mydomain.com and our client domain is ...
0
votes
0answers
30 views

postfix bounce email to seperate dovecot server [duplicate]

I have searched for information about installing dovecot on a different server than the one that postfix is running. My setup is multiple postfix servers running in docker containers. I like to ...
0
votes
2answers
481 views

Spam delivered by mx.google.com despite SPF fail

Some spammer use our e-mail address as sender in forged e-mails. Now we got thousands of bounced messages from no longes existing e-mails. We set up SPF and DKIM records but it does not stop. ...
1
vote
1answer
119 views

Export or Forward /var/spool/mail/USER (readable for customer)

there are some bounce mails in the /var/spool/mail/USER directory that failed to send. Now the customer receives all of those mails from us because he does not have direct access to them. I can ...
1
vote
2answers
118 views

How to send a large number of emails to a dated list of receipients

One of my clients was to send an email to ~100,000 recipients. The client is a state organization, the emails are not promotional, the recipients are all members of the organization and they are sure ...
1
vote
1answer
49 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 ...
5
votes
3answers
99 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 ...
0
votes
1answer
57 views

Possible to setup a secondary email server with unique addresses?

It is possible to setup two email gateways such that if a record doesn't match the first server then it attempts a second server before failing to deliver? Background: Client recently switched from ...
0
votes
1answer
199 views

How would get an email server reputation via cli or script?

I am trying to monitor email server reputation via cli or script i.e. https://www.senderbase.org/ I found a way supposedly to do it via dig, but the output appears to be very incorrect. It indicates ...
-2
votes
1answer
304 views

Will exchange server receive emails with wrong address [closed]

Say if I sent an email to user@theirdomain.com, the exchange server and the user will receive it, but if I sent an email to fakeuser@theirdomain.com using SMTP client, there will be no fakeuser ...
1
vote
0answers
1k views

Rejected emails when sending from google apps to some domains (550 Unrouteable address/Sender verify failed)

i'm sending emails from my domain prokubo.com using google apps and i'm having returned emails at least when sendind to two different domains: Delivery to the following recipient failed permanently: ...