Questions tagged [postfix]
Free and open source mail transfer agent (MTA) that routes and delivers email. When asking about postfix problem, please include the relevant maillog lines and output of the following command: `postconf -n` (non-default content of main.cf) and `postconf -M` (content of master.cf)
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Ubuntu server 14.04.5 - sending emails on behalf of customer domain
Good day all,
I have a customer who has a website on a VM ubuntu server which is hosted by ioMart.
They have been having increased issues more specifically Gmail, when sending emails from the website ...
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How to Disable VERP
How does one go about to disable VERP?
A unique folder is created for each bounce message containing the bounce. The folder will have a name such as bounce_66df08d75885e802455708. So, you have a long ...
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Postfix deferred mails if 1 of many adresses is wrong
If someone sends mail from Outlook with multiple addresses in bcc and 1 of them is wrong (syntax or unknown user) mail gets deferred and no one gets it:
Sep 10 08:46:48 server postfix/qmgr[31948]: ...
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36
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Postfix transport maps lookup failure
I started to get temporary errors when I am sending emails:
Sep 5 08:57:45 rb01-he postfix/trivial-rewrite[370959]: warning: proxy:mysql:/etc/postfix/mysql-virtual_transports.cf lookup error for &...
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postfix: rewrite all emails expect those from two defined domains
I am searching and testing for hours, but I couldn't find a solution so far :(
we have a postfix and rewrite every email to a special sender and relay it to an o365 server.
at the moment it is like ...
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44
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SOGo Login Without Full Email Address in Mailcow Setup
I've set up Mailcow with the SOGo client using Docker Compose. Currently, when logging into SOGo, I need to enter the full email address, for example, [email protected].
However, I'd like to change this ...
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2
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Adding originating source hostname to email subject with Postfix
First I have Gmail SMTP working fine using Postfix from Debian 12 (using SASL). This works like a charm.
However, I am trying to modify the outgoing subject line of relayed email using Postfix header ...
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postfix/master[2863]: fatal: fifo_listen: open public/pickup: Permission denied
I'm running postfix in kubernetes. Specifically, I'm running docker-mailserver:14:0:0
when I start the container up, I'm getting the following permission error but have no idea what to do about it.
...
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Why does Postfix lookup the sender when resolving transport maps?
Email for our clients are hosted on a few different internal mail stores.
I'm using the tcp_table transport lookup protocol to assess which internal server the mail should go to, but noted that ...
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Recommended configuration of OpenDKIM TrustedHosts
In the process of migrating my mail server to a new host. One of my struggles is OpenDKIM isn't signing outgoing mail (not internal). Currently my TrustedHosts file is as follows:
127.0.0.1
::1
...
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Set up Postfix to send mail through Google's smtp-relay?
I'm trying to set up a postfix-server to relay emails through using Google's smtp-relay from, using another domain-name than the one's registered with Google. I have had this working for years using ...
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Rocky Linux 9, Mailscanner - Postfix issue, Unable to kick message
Aug 29 20:19:06 kratos MailScanner[128919]: New Batch: Scanning 1 messages, 1557 bytes
Aug 29 20:19:06 kratos MailScanner[128919]: Virus and Content Scanning: Starting
Aug 29 20:19:06 kratos ...
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is it possible to add virtual users to the same domain as local users on postfix
Is it actually possible to add virtual users (sqlite) to a postfix server working with local users with ONLY ONE domain?
local users with maildir=$HOME/mail/
virtual users with maildir=/var/vmail/$...
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postfix->spamassassin mail goes into loop
I had a working postfix installation and I added spamassassin by including the following in master.cf
smtp inet n - n - - smtpd -o content_filter=spamassassin
...
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postfix virtual user email always redirected to root (was: how to reject non existent users from inside with mail command on smtp server)
After multiple tests I realize that what I explained below does not correctly describe the problem. The problem is broader than for internal mails on the server.
Basically, what I am trying to do is ...
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Postfix Email Sending Policy
I have a postfix based mail server and I am trying to segregate email accounts into two groups. Group one I have,
[email protected] [email protected] [email protected]. Group two I have jane@...
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1
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Reason why a customer's email is rejected
I'm having problems with a client's email being rejected.
For some reason, I trigger one of my server's security policies and it rejects it.
The log is as follows:
Aug 23 09:38:57 mail postfix/cleanup[...
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28
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Postfix: how exactly does virtual alias recursion work?
virtual(5) is pretty unhelpful here. It just says "Virtual aliasing is recursive; to terminate recursion for a specific address, alias that address to itself." narkive does appear to have ...
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postfix with Maildir config still delivers to Mailbox
I want to have virtual accounts with Maildir, so I figured out the following main.cf
home_mailbox = Maildir/
virtual_mailbox_domains = mydomain.com
virtual_mailbox_base = /var/vmail
...
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1
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65
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SPF is failing because RoundCube's first hop is from localhost 127.0.0.1 - need it to be my server's IP
I have an email server that can send emails fine through email clients; however, when I successfully send from webmail (RoundCube), the first hop is coming from my webmail.mydomain.com using localhost ...
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102
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Postfix won't start because it's "already running"
I'm trying to configure a VPS for my website and currently setting up email following a guide. I think I may have got into a bit of a mess through not really knowing what I'm doing yet. Most of the ...
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Linux email server configuration: the postfix relay_domains setting and sending email
I am trying to set up an email server on an Arch Linux VPS using postfix and dovecot. I'm using plain unix password authentication, in which dovecot handles SASL authentication for postfix. For the ...
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Postfix/Postfwd load balancing
The organization I work for sends a lot of email through our Postfix 3.5.8 servers. This issue we are trying to solve is that we are exceeding Google's mail thresholds, but just realized that this ...
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Postfix Temporary authentication failure 454 4.7.1
I followed https://www.unixmen.com/setup-a-local-mail-server-in-centos-7/ to setup my mail server.
Currently,my mail server can neither receive from nor send to an external email account.Postfix and ...
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2
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64
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Postfix mailserver with two IPs. Map each sending IP to different application
I have one mail server (Debian 12, Postfix) with two public IPv4 IPs for two applications.
I must send all emails from application A from IP 1.2.3.4 and application B from IP 5.6.7.8.
Both application ...
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32
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Postfix relay mails from alias domain to main server
I use my own server as a relay for customers sending newsletters. It's necessary because of the webhoster limitations.
I've added the domains as virtual_alias_domains and a webmaster@ to ...
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38
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Postfix problems on new RHEL 9.3 install
I'm trying to build a new Postfix mail server to replace an old RHEL 6.3 system. The build has postfix, postfix-mysql, amavisd, dovecot, spamassassin and clamAV installed. The build is not supposed to ...
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Postfix mail forwarding SPF failure, SRS failure
I run a postfix/dovecot mailserver on Ubuntu 24 which as well as having mailboxes on the server, does some forwarding out to external mailboxes e.g. gmail. Gmail recieves this mail and SPF checks have ...
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Postfix smtpd_sender_login_maps, check for LDAP and a manually created list
I have enabled SASL on my Postfix server and have placed an LDAP configuration file for smtpd_sender_login_maps. It currently looks like this:
ldap_sender_login_maps.cf
server_host = AD.SERVER.com
...
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1
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134
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High availability email with dovecot/postfix
I'm facing an issue with our server email. Yesterday, our email provider was down for over 20 hours, severely impacting our business operations.
We have approximately 5TB of archived emails, which ...
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3
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Can I restrict which users can `sendmail` from an address with Postfix?
I've set up Postfix on my server (let's call it example.com), and I can prevent SMTP clients that don't authenticate as admin from sending email from [email protected] with (for example):
# main.cf
...
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postfix sasl authentication not working - testsaslauthd shows different result with -u"user@realm" vs -u"user" and -r"realm"
I'm setting up a postfix smtp relay with saslauthd authentication on Ubuntu 24.04. I've set up postfix to use sasl, but the sasl authentication from my mail server to the relay is not working.
I don't ...
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postfix doesnt deliver nor receive mails
I set up a docker container (mailserver/docker-mailserver) on my server.
Postfix is giving me the following log when I try to send or receive a mail:
2024-07-30T17:40:01.753276+02:00 mail postfix/qmgr[...
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2
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122
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Call to php mail() are not queued in postfix
I'm running CentOS7, PHP 8.0.30, postfix 2.10.1-9.el7
Sometimes emails we try to send through php mail() function are not sent and after enabling verbose logging for postfix's pickup, cleanup, qmgr, ...
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52
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Postfix bounce incoming email
I want to configure a postfix mail server using dovecot and postfixadmin with mariadb.
I have followed many turorials and forum post and i am unable to receive emails.
I test the configuration by ...
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Is my Ubuntu/Postfix backup Email server working properly? : "connect to mail.mydomain.com[483.31.59.1]:25: Connection refused" How to fix?
I have two email servers running Ubuntu 22.04, with postfix. My main email server is working flawlessly. However, there are times when the email server goes down for maintanence or updates. During ...
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How to troubleshoot postfix repeatedly sending same email
EDIT:
Added output of postconf -n and postconf -M as suggested
AA425A04D2 was sent and removed from the queue
Since Friday afternoon (July 19) at about 5:30pm, my email server has been repeatedly ...
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1
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89
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How do I fix the default FROM address on a system email sent via Postfix
I am using Ubuntu 22.04 LTS and Postfix to send messages out through SendGrid. I followed the tutorial at here https://www.twilio.com/docs/sendgrid/for-developers/sending-email/postfix
I have several ...
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Using mailcow-dockerize send emails without authentication
My mail server is Mailcow-dockerize.
I have 20 accounts and sending and receiving working file.
Now I have a case that my one system need to send mail without authentication.
“[email protected]” need ...
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101
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Dovecot Mailserver moves mails with "List-Unsubscribe" header to junk, although no spam settings configured
I have my own mailserver setup with postfix and dovecot on an Ubuntu 20 server. The setup is very standard (postfix using mbox files) and has been working nicely for a long time. However, there is an ...
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Change the Subject header of an email in postfix based on the To header
After reading thru the postfix header_check man page and reading the internet I came up with this PCRE to delete the Subject header and then add the Subject back with the data I need. But the second ...
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Sending of the message failed - Insufficient system storage
I have Debian 11 with Postfix and dovecot. My mail was working fine until yesterday but today Im having the following error:
Sending of the message failed.
The message was not sent due to exceeding ...
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send email using multiple domain emails using main domain postfix smtp server
I have a domain with postfix for SMTP server, eg EM-NAME.DOMAINNAME.COM
We are sending emails in bulk from domain email [email protected]
I am trying to send emails on behalf of my ...
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33
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Reference the intended recipient in postfix custom bounce template
I'm running a mailserver on an Ubuntu 24 machine with Postfix(v3.8.6), Dovecot and Amavis working together to form a mail system for multiple domains. The postmaster for the main domain of the ...
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How to format postfix headers correctly?
I am trying to set my email FROM header field each time I send an email.
First I create a text file:
To: [email protected]
Content-Type: text/plain; charset=us-ascii>
From: [email protected]
...
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18
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How can I sender mail with custom sender field?
My mail is not passing SPF checks when delivering to gmail. My error message reads:
Your email has been blocked because the sender is unauthenticated. Gmail requires all senders to authenticate with ...
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53
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Postfix does not work with SMTP authentication
We are using postfix without authenticacion and works correctly, but my company now requires smtp user/password.
I have configurated password file in /etc/postfix/sasl_passwd
[smtp.domain1.com]:1025 ...
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How can I deliver incoming mail based on recipient domain with Postfix?
I have been digging for an answer to my current problem for several weeks now, so I am asking here in hopes someone can shed some light or point me in the right direction.
I am attempting to configure ...
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2
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158
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Should SMTP HELO name be the same as the MX record?
I can't seem to satisfy HELO checks on SPF records in all cases. I have an SPF record for my domain like this:
"v=spf1 mx -all"
The MX records in the zone are:
mx0.mydomain.org.uk. ...
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113
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Postfix Mail being redirected to private inbox
I am relatively new to Linux, setting up servers and especially handling mail related things. I've bought a new domain and rented a VPS, which now hosts my website. I need a more open environment for ...
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