Questions tagged [postfix]
Open source email server for Unix
703
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After updating Ubuntu, Postfix fails
I am complete new here.
I have updated and ubuntu v. 16.04.7 LTS to 18.04.6 LTS.
The server is only used for mail sending.
After that, postfix is complaining "host or domaine name not found"^...
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29
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i have a mail server with postfix and roundcube, But now can't send and receipt email
I have error
SMTP Error (451): Failed to add recipient "xxx@xxx" (4.3.5 Server configuration error).
with log
sv2 postfix/submission/smtpd[21621]: NOQUEUE: reject: RCPT from unknown[185.107....
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1
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60
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Unable to send emails from Postfix via Gmail (connect to smtp.google.com: Connection timed out)
I want to configure a Ubuntu Linode VPS to send log information from Fail2Ban, Apache ModSecurity and other monitoring tools to my email address. However, I don't want to configure a whole email sever:...
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74
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Using sendmail to send notifications (Fail2Ban) through Postfix relay
I'm still pretty much a complete neophyte when it comes to Ubuntu/Linux in general, but I'm familiar with how sending mail via SMTP works in general. So now I currently have two Ubuntu servers running ...
- 115
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Ubuntu Postfix server, what's the better spf check program, the one written in python or perl?
In Ubuntu there are two RFC 4408 compliant policy servers for postfix you can use. One is written in Python. The other is written in Perl. Any thoughts on which one is better? Thanks in advance
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1
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1
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95
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Need fresh master.cf postfix file
I've installed postfix 3.6.4 and have it mostly working. I'm able to send outgoing emails but not getting incoming ones. When I run sudo ss -lnpt | grep master, I only get one line where port 25 is ...
- 13
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1
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70
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How do I fix my machine after purging ca-certificates?
I have done a very silly thing by running the following command.
sudo apt-get purge postfix mailutils libsasl2-2 ca-certificates libsasl2-modules
This has left my machine without a network connection ...
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125
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postfix header check
I would like to use postfix header check. I read the manual, examples, and forums, yet I am unable to set up what I would like.
We are getting non delivery reports, and I'd like to silent drop/delete ...
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0
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64
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Postfix - how to reject all email with a 450 response code?
I am going to be migrating my email from one server to a new one.
During the migration I would like the old server to reject all incoming email, but with a code 450 so that the sending servers will ...
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21
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Postfix with M365 relay giving problems
trying to setup my VPS with postfix and M365 as a relay host. Read several tutorials, but for some reason none of them does the job.Followed this instruction enter link description here, but postfix ...
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830
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QEMU not installing
So I wanted to install QEMU on my Windows laptop running Ubuntu 20.04 using:
sudo apt-get install qemu-system-i86 -y
and I got this error.
Reading package lists... Done
Building dependency tree
...
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0
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37
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SMTP Authentication encryption
I have working on trying to get an smtp server setup with postfix and dovecot.
When running telnet localhost 25 and execute ehlo localhost directly from the system I get the following
250-smtp....
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1
vote
2
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424
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Using List-Unsubscribe headers in emails in Postfix Mail Sever
Please guide me to to add List-Unsubscribe header in email in postfix mail server. I tried doing that in linux server. But the List-Unsubscribe header is not showing when I sent mails. When I ...
0
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1
answer
155
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Security Certs for multiple domains in postfix
In postfix when configuring for multiple domains do I need the following lines in /etc/postfix/main.cf for each domain or something else? I already have certs for the domains in question from ...
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1
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1
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500
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Postfix is not working? Telnet connection refused when testinf
I am attempting to get postfix working on Ubuntu Server 22.04 for send only.
When attempting to test the server using telnet mydomain.com 587, I get the following
Trying 192.168.107.11...
telnet: ...
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0
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48
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How to install and send emails with Postfix
I am trying to install Postfix on a server and have it go through a relay. I would like to have the email with a custom domain, so I bought a domain and registered a A record to point to the relayHost'...
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56
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Mail command stop working
I'm not sure how to debug this while my simple mail command used to work, but no longer working right now.
Ex. echo 'test' | mail -s 'test' jdoe@gmail.com
While these commands not working I was able ...
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275
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Postfix not working on AWS EC2 Ubuntu 22.04
I've followed https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-postfix-as-a-send-only-smtp-server-on-ubuntu-22-04 and configured postfix on Ubuntu 22.04. But, when I try ...
- 101
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1
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413
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Unable to send email locally using Postfix relay host
I have two ubuntu servers 22.04 in the same network 172.16.0.0/24. One is setup as a webserver and the other as a mailserver using mailcow.
For starters my objective is to send an email notification ...
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31
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Postifx send DSN from different IPs
I have a Postfix email server and multiple domains, each with its own IP & Reverse DNS, etc.
The problem is that when someone sends email to one of these domains and requests a "Develivery ...
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152
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Ubuntu server mail server
I wanted to ask if you could help me to start my own email server. I followed a tutorial to start my own mail server on my bought domain but something is not working.. I have a server on digital ocean ...
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39
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send emails in LAN with mailx and postfix
I want to send emails in my LAN with mailx and postfix, but postfix cannot deliver the mail. Are the 192.168.. IP-addresses the reason? How do I have to set postfix in main.cf to allow emails in my ...
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302
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dovecot errors: pam_authenticate() failed / userdb returned 0 as uid
I am recieving errors while configuring postfix and dovecot for virtual users mailboxes. Initially I made a typo in the main.cf config file. I corrected that error and am now receiving errors. Virtual ...
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306
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Send email with CURL - it returned 0 for CURL command but the receiver didn't receive attached files
I have a shell script running on a container CENTOS 7 to send automatically emails.
To send email, I use SMTP server (private) via CURL (version 7.29).
The code
send_pdf(){
receiver="$1&...
1
vote
1
answer
173
views
How to migrate a remote mail server without having to notify its users?
I've got a remote mail server(henceforth A), based on this tutorial. Dovecot is the software used as the IMAP/POP3 mail server. I want to migrate every byte in A to another remote server(henceforth B),...
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213
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Ubuntu Postfix + thunderbird
I have 2 VirtualMachines: 1. Ubuntu 22.04 and 2. Windows 10 On Ubuntu I have configured postfix/dovecot and on Windows 10 I use Thunderbird. Also, I have 4 users: a@mydomain.com , b@mydomain.com , c@...
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270
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FastPanel dont work after installing postfix in Ubuntu 20.04 LTS
I'm newbie in Linux. After installing postfix to get dkim key Fastpanel stopped working. Then I removed postfix and installed exim but it din't help. How can I make it work again?
1
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1
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507
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Postfix/Postscreen Rejecting e-mails from Gmail
I have a Postfix mail server installed on an Ubuntu 20.04.4 LTS server running on an Antsle Nano device. Postfix was installed as a part of the iRedMail package, which preinstalls a host of additional ...
- 115
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46
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Check Root Email in Thunderbird Updated Version
I am on Ubuntu Desktop 20.04 running Webmin 1.998, Postfix 9.4.1, Thunderbird 91.11.
How can I use Thunderbird to read my root / webmin emails?
Researching this, I can only find an old post whose ...
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82
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Has openDKIM been removed from repositories? [duplicate]
Has openDKIM been removed from the package repositories? Using 18.04 lts and can't find or install. Is there a current recomended DKIM package?
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128
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I need help with postfix
I am trying to use postfix in order to send out e-mails when i have alerts on my checkmk. My issue is that after going through 50+ guides + videos online nothing ever works!!
My understanding is that ...
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1
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1
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33
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Landscape sends internal emails, cannot remove
I have an Ubuntu 18.04 server that is continuously sending emails which I can see in /var/log/mail.log. I might have had this server configured to use Landscape at some point in the past, but I am not ...
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92
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Postfix 'mydestination' empty entry/floating comma
Postfix setting 'mydestination' has a floating comma by default, which I assume means an empty entry to the list.
Documentation doesn't mention this. Examples are given under the header "What ...
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0
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87
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Why do mail clients try to access my UBUNTU 20.04 Postfix (v3.4.13) outgoing mail server
I run a private mail server, however it is found by non associated mail clients that try to access the outgoing server smtp ports. Why and how does this happen? Is it hackers that look for machines ...
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208
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What can be wrong with my mail server
I'm trying to setup a postfix, dovecot, and roundcube mail service system on Ubuntu 20.04. I have been following this tutorial https://ubuntu.tutorials24x7.com/blog/install-mail-server-on-ubuntu-20-...
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213
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Installed Postfix and Amavis but SPF Check dosent work
I installed Postfix and Amavis and followed the instructions below.
Link:https://help.ubuntu.com/community/PostfixAmavisNewClamAVSpamAssassin
Test Emails via Telnet arrive or are Rejected when I ...
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112
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Slow email receiver in postfix configured on Ubuntu
We are sending emails to destinations and the email traffic is high but recipient server is not accepting all emails due to their security rules and source emails can't be restricted.
How to deal or ...
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294
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Postfix is using hostname and not configured domain name
I am following Digital Ocean's guide for setting up Postfix on Ubuntu 20.04, found here.
The problem being when I get to the step about sending yourself an email:
echo 'init' | s-nail -s 'init' -...
3
votes
3
answers
3k
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How do I fix Postfix Submission TLS Error - unexpected eof while reading:../ssl/record/rec_layer_s3.c:308:
I have a brand new Ubuntu 22.04 install with mail system setup broadly as per:
https://www.linuxbabe.com/mail-server/setup-basic-postfix-mail-sever-ubuntu
and I get the following errors:
Jun 1 08:07:...
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2
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193
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Postfix block email with asian characters
We have an email server running Dovecot and Postfix.
I recieve a lot of spam email containing wierd chinese/japanese or other asian characters.
We don't need these emails in our organization and we do ...
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1k
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Configure host base Postfix and send emails using a container
I have installed and configured the nano /etc/postfix/main.cf file for postfix in the host server and when I try to send it from the host server echo "Test Postfix Gmail SMTP Relay" | mail -...
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1
answer
465
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How to install postfix>=3.5.0 on Ubuntu 20.04?
I've searched high and low and it seems everyone just installs the default postfix package (version 3.4.x)
There is a feature only available since Postfix v3.5 that I want to use.
So how do I install ...
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143
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Roundcube config script not found by Apache
I have installed roundcube and roundcube-psql on Ubuntu 20.04 from the packages. At the top of /etc/apache2/conf-available/roundcube.conf there is a single alias which I have uncommented.
# Uncomment ...
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1
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871
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Postfix mail server - Gmail integration
I've setup a postfix mail server. I had an issue with some emails getting rejected but managed to fix it. I have been looking at solutions and had found one option to use Gmail as the SMTP relayhost. ...
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1
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416
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Postfix outgoing email - Bad DNS PTR
I have setup Postfix on Ubuntu 20.04 server but when sending an email out to one of the email address I get this error message below -
A2DC19FAFF: host mx00.1and1.co.uk[21.22.50.41] refused to talk to ...
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130
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Postfix Hostname Change mailbox issues
Please excuse my ignorance.
I changed the my server name and the hostname my domain was example.com and now it is example.ie
When I send an email to one of my email addresses something@example.ie I ...
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0
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166
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Postfix causing a fatal error in file reconfiguring not working either
I am at a loss with this issue, I installed a new server setup from Vultr, and installed 18.04 Ubuntu in it, I just realised I cannot send any emails using the PHP mail function.
The error that it ...
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131
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Postfix not receiving email from gmail but it does recieve from hotmail
I got Zentyal SOGo installed. I can send emails from SOGo and both the gmail and hotmail accounts receive the emails.
I reply the email from hotmail and SOGo receives the email.
I reply the email from ...
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2
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298
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whenever I try install a new software i get a newaliases: fatal: myorigin parameter setting must not contain multiple values:
Running newaliases:
newaliases: fatal: myorigin parameter setting must not contain multiple values: nduduzo-Inspiron-5559 nduduzontshangase@gmail.com
dpkg: error processing package postfix (--...
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0
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285
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root mail - postfix, etc
for reasons that I cannot seem to divine, my postfix keeps trying to deliver messages to root to root@[MyISP].com, which of course is getting rejected as invalid username by the SMTP gateway at [MyISP]...
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