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" (content of main.cf) and/or "postconf -M" (content of master.cf)

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36 views

Single certificate for postfix/dovecot mail server with multiple domains

I have a single IP-address and thus one mail server (postfix+dovecot on CentOS 7). I have one main domain name and each client has their own domain name on which they want to receive mail. All A and ...
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45 views

mail.log file is growing too quickly

my mail.log file is currently growing out of all proportion. It's logged over 15Gb of content today and most of that seems to be down to spamassassin. There are a few questions that I can't ...
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98 views

MySQL 5.7 under Debian Jessie with postfix-mysql

I currently have MySQL installed from the MySQL APT repository and am on the 5.6 branch. It comes with libmysqlclient18 and postfix-mysql requires it. If I want to switch to the 5.7 branch, APT will ...
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40 views

Postfix smtp relay to Office 365 for certain sender-domains

I'm running Debian Wheezy with Postfix 2.9.6 and I'm trying to enable the smtp relay for some certain sender-domains for office 365. I whitelisted my IPv4 for smtp relaying on the exchange server: ...
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67 views

Roundcube unable to connect to Dovecot/Postfix via IMAP

I've recently moved a working isntance of RoundCube from my mail server (running Dovecot & Postfix) to a different server, and pointed it at the original server. However, since the move I have ...
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64 views

AMaViS - Quarantined and Relayed mail sending address

Using AMaViS, I recently had this problem for outgoing mail: Mail was reported by AMaViS with BAD_HEADER_7 or more accurately: X-Amavis-Alert: BAD HEADER SECTION Missing required header ...
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75 views

Postfix/Dovecot Mail: fatal: no SASL authentication mechanisms

I'm getting this issue when trying to setup Postfix/Dovecot to work on my Ubuntu server, 15.10. Followed this guide to try to setup the server, worked in the past. However, trying to upgrade to 15.10 ...
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54 views

Configure Postfix to send emails from my domain name

All my clients use gmail, but would like to use the domain name that I own, say domain.com to send from. I've already figured out how to forward emails that go to domain.com to its respective gmail ...
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90 views

Zimbra Admin Page White Screen

I'm having an issue where my zimbra admin page (https://zimbraurl:7071/zimbraAdmin) is only showing a white page, F12 is giving me this error. I'm running version 8.6.0_GA_1191, I've gone though ...
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176 views

Postfix error: no SASL authentication mechanisms

I have searched many hours but can not fix the problem. Does anyone can show me the way to fix it? This is my postconf -n postconf: warning: /etc/postfix/master.cf: undefined parameter: ...
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34 views

Postfix: I've misconfigured my virtual forwarding, VIRTUAL@com.com is getting my email

So I've setup postfix for say me@example.com, I then forward emails to that address to my gmail as I don't want to store them on the vps. My /etc/postfix/virtual has equivalent; me@example.com ...
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59 views

Bypass client and recipient restrictions by domain name

I'm wondering if there is a way I can bypass the restrictions by domain name. For example; mydomain.com will follow the client restrictions listed below normally. mydomain2.com will skip client and ...
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36 views

PostFix Issue When Sending Emails through Outlook

I also have the Relay access denied issue and it's really disturbing me. Your help is much appreciated. I can send and receive normally from the web mail. However, when I configure the email on ...
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43 views

Roundcube Not Fetching E-Mails from /var/mail directory

I recently set Roundcube up along with Postfix and Dovecot. It's all configured correctly as far as I can see. Roundcube sends emails fine but doesn't fetch any, what's strange is I can see the E-...
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337 views

Postfix: error: open database /etc/postfix/generic.db: No such file or directory

I am seeing such an error when starting the postfix server, and also lots fo failures when watching the maillog. How can I solve this issue? Jan 13 22:43:46 CentOS-72-64-minimal postfix/master[1651]: ...
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40 views

Create alias with all users from mysql table in postfix/dovecot

I have a table with users for my mail server. This table for imap authenfication in dovecot +-------------+------------------+-------------------+------------------+------+------+---------------------...
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47 views

Postfix - dynamically change header

is possible to dynamically change an email's header by another header line? Let me explain, our email's header looks like this: Message-ID: <199053566811.1335534.134452893157927.JavaMail....
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37 views

Postfix - master.cf - Share settings

I would like an authoritative answer on whether I can share settings as described below, from someone who has set up a production grade postfix server. The goal is to only apply spamassassin ...
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109 views

Trying to set up Gmail “send mail as” SMTP mail function

Alright, so I've come here as a last resort hoping to find that last bit of help I need to solve this. I've spent the last two days scouring for answers without actually getting anything direct. First ...
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164 views

Postfix capture messages exceeding limit

Is it possible to capture/filter messages that are exceeding the limit that has been set in the postfix configuration, and forward the captured mails to an external id? thanks in advance. EDIT : We ...
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88 views

postfix Delivery expired (message too old) '[Errno 61] Connection refused' (delivery attempts: 0)

My postfix mail users have the following error being thrown at them when they send a mail. Action: failed Status: 5.0.0 X-Supplementary-Info: < #5.0.0 smtp; 5.4.7 - Delivery expired (message too ...
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9 views

virtual_create_maildirsize in new postfix (2.9.1) Debian

I have created a script to show free space on mailbox using file maildirsize (in /home/vmail/mydomain/mymail/) This file was autogenerated in my old postfix Version (2.7.1) but not now, is any way to ...
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20 views

Postfix sending limitation

I am a complete newbie in server-administration, but with this new work I am actually the system admin. So, first of all, I am kinda sorry for my poor property of language - but I am actually a web ...
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55 views

postfix rejects all EMails Recipient address rejected: User unknown inlocal recipient table

Hi Together I've got a problem with my postfix server and i can't solve it. I set up a local mailserver with dovecot and postfix to receive e-mail over my own domain. It worked fine till i tried to ...
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153 views

DKIM fail signature doesnt verify

I had setup postfix and dkim and keep on getting dkim=fail on port25 and gmail checks. DKIM check details: Result: fail (signature doesn't verify) ID(s) verified: Canonicalized Headers: subject:...
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33 views

SMTP server for Python parser

I'm trying to get emails into a Python application. There is an exchange server that marks some emails with a BCC address for archive@somedomain.com. I do not control the Exchange server. The email ...
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14 views

Access denied error connecting to SQL DB with Postfix

I have no idea how to go about debugging this. I have created an SQL user called postfix and i have verified that i can log into the DB with this user and edit tables. I have configured postfix to use ...
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183 views

Postfix “ Sender address rejected: not owned by user”

I've setup a Postfix/Dovecot mail server on AWS. I've implemented self-signed TLS authorization, connected to it from and external TBird client and tried to send/receive email. TBird is able to ...
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47 views

Relay email from a specific user through SMTP in Postfix

This is a very simple question and sorry if it is obvious/already answered. I have a mail server that I use to send mail from my primary domain. I have it set up just how I want it with TLS only, ...
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119 views

DKIM, SPF, DMARC, SPF OK mails are flagged as SPAM

I have a dedicated server running CentOS7 with Postfix, the problem is that all the sent mails are flagged as SPAM by hotmail and gmail despite DKIM, SPF, DomainKeys, DMARC records and keys wich are ...
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45 views

postfix whitelist all incoming mail with a specific domain destination

Would it be possible to whitelist all incoming mails with a specific recipient domain. I have multiple domains running on my mailserver. I want to simply push thru all the incoming mails with a ...
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31 views

Postfix + Dovecot - Internal Relay

I have a postfix/dovecot mail server setup. Mail is working perfectly. External relays are disabled. The issue is external servers can telnet to smtp 25 and spoof email from any valid domains hosted ...
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22 views

Postfix local reject message for valid user

I'm having a problem with postfix which is randomly rejecting mail to valid local users. Users are in a local openLDAP server, but configured as local users. I can't reproduce the problem, it look ...
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32 views

postfix - Rewriting address from maps before applying restrictions

I use Postfix and Dovecot on my server. I have quota plugin to my Dovecot applied so I have created service which provides information about quota to Postfix. My smtpd_recipient_restricions are: ...
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54 views

postfix / php mail() on ubuntu 14.04: no mail sent, no trace in log

Setup: Ubuntu 14.04 postfix 2.11.0 php 5.6.15 Php's mail() function does not send out emails on my VPS and no issue appears on the log. My test script is very basic: <?php error_reporting(...
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36 views

Identical VMs behave differently

I have 2 Centos 6.7 OpenVZ VPS'. I have copied the entire disk image from the first one (server1) to the second one (server2). Now I have a couple of issues with server1 that I don't have with ...
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121 views

Using postfix to send email in redmine

I'm trying to configure sendmail to send emails from the Redmine installation (which I still haven't figured out how to run with Apache). When I send mails from the terminal, with the command (example)...
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19 views

dspam is duplicating messages

I have the: dspam_destination_recipient_limit=1 in the postfix config. The mail system + aliases are working fine, but there is 1 special case, when I want to mirror a mailbox into another one. Eg:...
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27 views

How do I configure the default host for postfix's sendmail

I'm unclear on how postfix's sendmail decides which host to send mail to. I'm running postfix on my server -- listening on port 25, all good (I'm only using it for sending mail). When sending mail ...
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0answers
57 views

Zimbra not releasing space

We are using Zimbra 8.0 collaboration server open source edition. (Release 8.0.0_GA_5434.RHEL6_64_20120907144639 CentOS6_64 FOSS edition ) on centos6. While we deleting an Account or Emptying Folder ,...
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votes
0answers
36 views

mailx is working to send mails to external network. But mutt is not working?

I have a server with postfix service running. I am able to send mails to external network using mailx. But with mutt, I can only send mails to users inside network. What I might be the issue? ...
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708 views

DKIM-verification fails because of “insecure key”

I have my Debian (7.9 "wheezy") E-Mail-server (Postfix 2.9.6-2) setup to sign and verify DKIM signatures in e-mail messages using OpenDKIM (version 2.6.8-4). When I send myself an e-mail from my ...
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0answers
33 views

Postfix mailserver only allows sending from ONE email(support@domain.tdl), and only THAT email for THAT domain, but receiving from outside is fine

As the title says, I can only send emails(through webmin + thunderbird) using the support@maindomain.de email, but using other domains/accounts like blah@maindomain.de, wont send it(even though webmin ...
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78 views

How to change the name of root when sending mail

I would like mail sent from root to be sent as HOSTNAME <noreply@example.com>. On my outgoing-only servers that run exim4, I simply modify the file /etc/passwd and change the name of root to ...
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171 views

Postfix Configuration on Ubuntu 15.04 VPS

this is my first time posting here so I apologize if anything (or everything) is out of line. Basically just have a Wordpress site I'm hosting on a VPS running Ubuntu 15.04, MariaDB, nginx. I have ...
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56 views

postfix new mail notifications

We're looking at embedding a Postfix mail setup into an existing web (php / mysql) product so that it can offer inbuilt email send/recieve support along with mail account management (its a CRM). ...
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135 views

Cannot receive mail [postfix/dovecot] (updated)

Continuing my efforts to get my own mail server working with Postfix and Dovecot on Debian 8. I fixed the following issues so far: SSL, Secure IMAP login. I seem to be able to login via iPhone ...
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22 views

Can I selectively inhibit alias expansion with postfix?

In a sendmail configuration, I can selectively inhibit alias expansion using a backslash as in foo: \foo, bar@example.com foo-only: \foo The idea here being that email sent to foo will be ...
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268 views

Email transmission delays between Gmail and our server

A few days ago I started setting up a mail server for our company: OS: Debian MTA: Postfix DNS: bind9 Firewall: pfSense Port forwarding for ports 25 and 53 through pfSense for passing on DNS and ...
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35 views

I was asked IMAP password when logging on cyradm. How to reset IMAP password?

I am setting up postfix on my VPS, and when I tried to log on using this command: cyradm -u cyrus localhost --auth plain It ask me the password first, and I input the password for user cyrus. But ...