Questions tagged [postfix]

Open source email server for Unix

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Incoming mail does not work on Kubuntu 22.04

my incoming mail does not work even if I have postfix and dovecot set correctly. It was working without problems and suddenly it doesn't work. I have this in the log, what is it?The specified user ...
Maxximus999's user avatar
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28 views

Unable to send email out on port 25 which was previously working

Hello I am having issue sending mail from my own hosted mail server. I has worked fine for a long time. A few days ago I added DKIM using an online guide, everything seemed fine at first. About 18 ...
icarusbop's user avatar
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Start @reboot crontab script in a new tmux/byobu session and be able to connect to it

I have a crontab entry that starts a backup job script after reboot: @reboot (sleep 120 && bash /srv/recvuser/cron_autostart.sh) 2>&1 | /usr/bin/mail -s "SuperServer ZFS Backup&...
Alex's user avatar
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How to change usename on Postfix without create user

Config: Ubuntu Server 22 When we receive an email, it shows the following: FROM User [email protected]. This 'User' is the username of the user who was logged into the system before sending the email. ...
Shinomoto Asakura's user avatar
1 vote
2 answers
162 views

What is `postfix/smtps/smtpd` in my log file?

I know that postfix/smtpd is for incoming mails, smtp for outgoing mails. But I do see in my logfile several entries with postfix/smtps/smtpd. What is this for? Feb 22 10:57:55 mx postfix/smtps/smtpd[...
Lukas's user avatar
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/usr/sbin/anacron kills dovecot and postfix

I am running dovecot and postfix on a 22.04.3 LTS Ubuntu server. Every day at 6:25 first the dovecot server and then the Postfix server gets stopped (it started about a month ago). It starts again ...
Lukas's user avatar
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Ubuntu 22.04 Postfix apt upgrade missing maps files post upgrade

Ubuntu 22.04 LTS, Postfix, APT Security updates are enabled, and APT is applying updates to postfix. However, post-upgrade postfix is left in a non-functional state. We get these errors in the logs: ...
GregS's user avatar
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Configure Postfix to ignore bounce replies to an invalid sender address?

Is it possible to ignore bounces caused by a specific sender? We have a code repository server that sends emails to users/addresses for all commits. For some reason, it’s difficult to have invalid ...
Justin Lloyd's user avatar
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171 views

Dovecot - imap-login SSL_accept() failed

today i configured Postfix, Dovecot and MySQL from tutorial https://www.digitalocean.com/community/tutorials/how-to-configure-a-mail-server-using-postfix-dovecot-mysql-and-spamassassin Actual dovecot ...
cermofi's user avatar
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Installing logwatch but getting postfix and dependencies error

Having a trouble trying to install logwatch on Ubuntu 22.04 LTS. Here is the output when trying to install: # apt install logwatch Reading package lists... Done Building dependency tree... Done ...
Moasson's user avatar
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All SMTP mail goes through port 25 which is rejected by gmail and others

I set up postfix & dovecot using this and this. I can now receive mails OK. However, my outgoing mail is rejected, presumably because it's being sent on port 25. How can I force it to use 587 ...
Brendan Murray's user avatar
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172 views

Ubuntu Server 22.04: How to write the Ansible debconf values into Postfix configuration?

I'm trying to automate the Postfix deployment into multiple Ubuntu servers: # lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 22.04.3 LTS Release: 22.04 ...
Floren's user avatar
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How to send a test e-mail through postfix using a FQDN instead of localhost?

problematic line: MAIL FROM:<[email protected]> although that could be a side, or even non, issue. Sending success and failure: nicholas@mordor:~$ nicholas@mordor:~$ ...
Nicholas Saunders's user avatar
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How to store the sasl password for Gmail from postfix?

Postfix works for sending mail to the localhost or the local FQDN, which is the hostname. Looking to send through gmail: nicholas@mordor:~$ nicholas@mordor:~$ swaks --to [email protected] -...
Nicholas Saunders's user avatar
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How to send to Gmail with Postfix?

How would postfix be configured so that a test e-mail as below would be sent through Gmail? nicholas@mordor:~$ nicholas@mordor:~$ swaks --to [email protected] --server mordor....
Nicholas Saunders's user avatar
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How to send an e-mail to localhost with Postfix?

Only one e-mail is received: Return-Path: <[email protected]> X-Original-To: [email protected] Delivered-To: [email protected] Received: ...
Nicholas Saunders's user avatar
1 vote
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How to solve Relay access denied error in Postfix

By seeing the mail.log, I see errors like this constantly: Dec 15 22:11:49 zeus postfix/smtpd[17078]: NOQUEUE: reject: RCPT from unknown[163.247.55.22]: 454 4.7.1 <[email protected]>: ...
jstuardo's user avatar
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Postfix is running but it is not listening in any port

this is the postfix status: ● postfix.service - Postfix Mail Transport Agent Loaded: loaded (/lib/systemd/system/postfix.service; enabled; vendor preset: enabled) Active: active (exited) ...
jstuardo's user avatar
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"Postfix" does not put fully qualified host name in the `From:` header line of an email sent using `mail` command

I have an old system lately upgraded from 23.04 to 23.10. However, I do not know if this problem was present in the previous versions, since I did not try to send emails in the previous versions. My ...
FedKad's user avatar
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Postfix sends to wrong address

I have a cron job that sends a report out once a day. The server is configured with postfix and the mailutils, and mailutils-common packages. On 20.04, I was able to send emails out no issue like this:...
spikeypanda48's user avatar
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Can't set up SMTP server

I am currently trying to set up an SMTP server on Ubuntu22.04, using the instructions from this tutorial: https://operavps.com/docs/install-smtp-server-on-ubuntu/ It says to use telnet to get the ...
alonza1221's user avatar
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Bounce settings not connecting to iredmail server with correct authentication details

I am using a VPS Server, Abuntu 22.04, PHP 7.3 and Interspire Email Marketer (IEM). The errors below occurs when I set the bounce email (in IEM) the same as it was previously on another VPS server. ...
Hawk007's user avatar
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Postfix and dovecot unable to receive or send mails

I'm trying to setup smtp server for my website on my Ubuntu server, I have successfully installed postfix and dovecot and configured them (at least how I understood from tutorials), but I have ...
Ferius's user avatar
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Postfix unable to send and receive emails

I have a new ubuntu server, version 23.04, where I have Webmin installed and through which I installed Postfix and Dovecot. I have a local user (eml_user1) that I want to have the email address ...
Marius's user avatar
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Problems with receiving in the mailbox with postfix

I installed the Postfix MTA, I configured it to work as "internet site" and I added the corresponding domain name to the mail system to be able to receive the mails. However, the problem I ...
Laura Equihua's user avatar
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copy postfix/dovecot/imapsync configuration to new pc

TL;DR Fast and easy way to copy postfix/dovecot/imapsync configuration to new pc? First of all, I almost have no clue on how email and email servers work. Moving on, I have an old server with an old ...
Francesco Lorenzoni's user avatar
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519 views

Postfix server sending emails using wrong FROM address

I'm trying to get a working Postfix and currently I'm dealing with the following error in my logs: postfix/qmgr[57927]: 0E37E7B9B9: from=<[email protected]>, size=250, nrcpt=1 (queue active) ...
Brenno Flávio's user avatar
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160 views

Configuration email server from multiple domain names

I have one VPS server and 4 domains under that, having 1 IP address as of now, also I have 4 CloudFlare accounts for 4 domains hosted for easier DNS management My question is: Q1. Is it possible to ...
Ramesh Pawar's user avatar
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cant find dkimproxy

I run a ubuntu 22.04 mail server with postfix and want to install dkimproxy which was available in ubuntu 18.04. Does anyone know what happend to this package cause it is not available any more. Is it ...
Thomas Aichinger's user avatar
-1 votes
1 answer
548 views

Postfix outbound mail not passing SPF checks for gmail

Scenario I've had my mail with mediatemple for years but now that godaddy acquired them they have cut off my outbound mail and when I call in they are pushing microsoft 360 SO I've decided to roll my ...
Jacksonkr's user avatar
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Can't find Cron mail and cron jobs dont work

I have 2 scripts in crontab -e: 0 0 */3 * * /bin/bash /home/user/scripts/3day-san-backup.sh >> /var/log/3day-san-backup.log2>&1 0 0 */1 * * /bin/bash /home/user/scripts/1day-pny-backup....
spirledaxis's user avatar
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350 views

Port 25 blocked for *some* connections, not all

I've been trying to set up an email server with Postfix and Dovecot. I wanted to test it with mail-tester.com but the email wouldn't get through. Emails still get delivered to my business email ...
bobbynight's user avatar
1 vote
1 answer
182 views

I have setup Postfix to send mail with SMTP.Gmail.com server, mail only gets send at server reboot?

I am a linux beginner so might be doing something stupid, My problem, I am setting up a Ubuntu server LTS 22.04.2, and to get emails when there are updates I am trying to get mail and postfix to work. ...
Hansie's user avatar
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1 answer
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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"^...
Steen's user avatar
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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....
KML's user avatar
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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:...
LeperAffinity666's user avatar
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0 answers
792 views

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 ...
G_Hosa_Phat's user avatar
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0 answers
22 views

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
Mike's user avatar
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1 vote
1 answer
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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 ...
btrippy's user avatar
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1 answer
100 views

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 ...
Argentum's user avatar
1 vote
0 answers
126 views

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 ...
David Purdue's user avatar
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2 answers
3k views

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 ...
XCodeMonkey's user avatar
1 vote
2 answers
2k views

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 ...
Asghar Esmatullah's user avatar
0 votes
1 answer
241 views

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 ...
amd.64's user avatar
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2 votes
1 answer
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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: ...
amd.64's user avatar
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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'...
GuerillaRadio's user avatar
1 vote
0 answers
527 views

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 ...
Wasim's user avatar
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1 answer
1k views

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 ...
user3596617's user avatar
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0 answers
299 views

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 ...
king's user avatar
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1 vote
1 answer
448 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),...
Kostas M's user avatar

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