Postfix is Wietse Venema's mail server that started life at IBM research as an alternative to the widely-used Sendmail program.

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Postfix/Rancid - Confused by terminology, /etc/aliases, and relaying mail from localhost

I want to send notifications from a non-domain linux server, to my corporate email, me@company.com. My main concern is receiving notifications from an installed instance of rancid. I am confused by ...
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12 views

Domain on Webserver and different Mailserver leads to error

I have a curious phenomenon. At my provider for domains I had done following settings: A record of the domain (e.g. mydomain.com) routes to another IP address (a remote webserver). MX record are ...
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1answer
571 views

Sending emails from AutoMySQLBackup from Linux Mint

I have set AutoMySQLBackup on a Linux Mint machine and I want to have the backups sent to an email, but I cannot make it work. I'm new to Linux environment and don't understand it very much. I ...
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2answers
724 views

Restricting who can send to an email address

I'd like to do so that only certain From: addresses can send to an email address (mailing list) on an Ubuntu system running Postfix. Understanding the Postfix the manuals are requires a lot of ...
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1answer
9k views

postfix/smtpd: warning: connect to Milter service unix:/var/run/opendkim/opendkim.sock: No such file or directory

I have problem with postfix on debian after upgrading from squeeze to wheezy. Postfix was configured to sign messages using dkim-filter. Before update, everything was working flawlessly, now it fails ...
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1answer
14 views

postfix - unknown group: vmail

I have a VPS running Debian 8 in which I used this tutorial to set up. It is running dovecot and postfix. Recently I have started receiving errors every few minutes in my mail.err log file which look ...
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1answer
2k views

Mail forward: 550 5.7.1 Anonymous client does not have permissions to send as this sender

I want to install a small mailing list that forwards mails related to a specific project to all project members. So, let's say there are two members in that project userA@mailA.tld and ...
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0answers
449 views

Permission problems. Can't retrieve inbox mails from dovecot

I got a VPS server at a webhoster which has CentOS 6.6 as operating system. Because I have multiple domains which are used by various people this server is going to serve multiple roles: nameserver ...
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3answers
92 views

Installing Postfix conflicts with MySQL-server package

I had to install MySQL Server community on our server (team lead did not want MariaDB due to support or something). Therefor I removed MariaDB which in turn also removed Postfix. Now I need to ...
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1answer
24 views

how to use procmail as a MDA for postfix? (mailbox_command)

I am trying to setup procmail as a mail delivery agent (MDA) for postfix. I understand that I should use the mailbox_command option in postfix for this, but an internet search revealed contradicting ...
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28 views

How to trap spam sent from certain top-level domains?

I'm getting a lot of spam from eu TLD Maybe I could have put a rule set giving a score of say 2.5 or 3 for any mail originating from the .eu TLD; then this score + other factors could have made it ...
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2answers
2k views

SMTP issues - unable to connect : CentOS 6.5, Postfix, Dovecot, MySQL

I'm trying to setup an email server on a CentOS system with Postfix, Dovecot and MySQL. I'm following this article for an Ubuntu system: ...
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1answer
3k views

Mail filtering with procmail in a postfix/dovecot system with virtual users

I had a postfix/dovecot system with mail users working. After unsuccessfully following a few tutorials online to enable procmail, now I have an unusable system. What I want is to enable procmail ...
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1answer
967 views

mailx: nss-config-dir=/etc/pki/nssdb/: No such file or directory

I am trying to send email using mailx using remote SMTP server (in my case it is office365 SMTP Server). Here is the command: # echo "THis is the Body of the email" | mailx -v -s "This is email ...
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1answer
22 views

Postfix - external email notification when an internal email is received

describing my specific case; on our centOS 6.6 final servers , I've installed yum-cron, in order to schedule a check every night if there are updates from the active repositories. I preferred to ...
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48 views

My server email cant connect to outlook or thunderbird

I have postfix for smtp, and dovecot for imap/pop with FROXLOR. I have configured correctly, but i cant success in configure account in client mail programs. Outlook I recieve Log on to incoming mail ...
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13 views

Does postfix support MySQL connections over SSL

I have a postfix server and a MySQL database server. I setup MySQL SSL and have it working successfully. I can connect from postfix to mysql with the user requiring SSL. The problem I have is, when I ...
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2answers
723 views

Use /etc/aliases for outgoing mail relayed by postfix with local domain

I'm using Ubuntu 12.04 with postfix configured as satellite system that relays outgoing mail to Gmail. For sake of example, my registered domain is example.com I want root cronjobs' error output to be ...
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0answers
17 views

Postfix - Extract Final-Recipient from a large queue of mail

I have a large queue of backed up messages. I've checked a few and the Final-Recipient domain seems to be the same. I'm spotting a trend but I want to make sure before I take further action. How can ...
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0answers
40 views

Postfix does not send mails until the service is restarted

When I restart my server, postfix starts up - I can verify this by doing postfix status. It says "the Postfix mail system is up and running." When I try to send an email from a PHP script after ...
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1answer
1k views

setting up a relay port for postfix smtp on CentOS 7

A CentOS 7 server has postfix, dovecot, and mailx installed. I am able to make an IMAP connection to the server from my remote Thunderbird client running on my local devbox. But I am not able to ...
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1answer
70 views

Grep /var/log/maillog for email to a certain user, based only on his linux username

Level 1, beginner here. Question about grep and maillog. I have a learning environment, based on Linux CentOS, with Postfix and SquirrelMail running, but my assignment is more in general. I need to ...
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19 views

Postfix - domainkeys=neutral (no sig)

I have everything else working fine (SPF and DKIM) but I can't get domainkeys=neutral (no sig) to pass! domainkeys=neutral (no sig); from=foo.com; dkim=pass (ok) I know what some people are already ...
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65 views

Error 550 No Such User Here when sending mail to postfix server from certain servers

So, I've been doing a lot of Googling and researching, and I can't wrap my head around this. I set up a mail server using iRedMail. I'm not an incompetent Linux user, but I'm not experienced in the ...
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1answer
91 views

Postfix virtual alias domain matching with regular expression virtual alias map

Using Postfix (2.11.3) I want to redirect all mail to an external address. /etc/postfix/main.cf: virtual_alias_maps = regexp:/etc/postfix/rewrite /etc/postfix/rewrite: /^.+$/ hijacked@example.com ...
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1answer
23 views

Postfix - Force emails to stay in the queue for at least X seconds before sending

So I have been trying figure out how to modify Postfix email body messages without any real luck. I can figure out how to modify the first word but anything after that doesn't work. So my second ...
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3answers
52 views

Send mail at startup

I want to send a mail to myself at the restart of a server. We use AWS, and a restart results in a changed internal 10.x.x.x address. This address has to be configured in Postgres and elsewhere, and ...
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1answer
75 views

Cent OS 6.6 enable Plaintext authentication on dovecot and postfix

A customer of mine wants to use gmail as their default mail client but I have rolled forward to a new CENTOS server version (6.6, ok it's not "new" new) and the dovecot and postfix settings are ...
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1answer
18 views

Postfix - Delete queue for secondary installation?

I have installed multiple Postfix on the same server. To delete the queue for the main I run the following command postsuper -d ALL How would I do the same but for the second installation?
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1answer
27 views

CentOS 6 Cron Logging Without Postfix

On a CentOS environment I am setting up, I have no need for email of any kind. I would like to simply disable postfix entirely, however this also disables logging from cron which I do need to have. ...
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1answer
37 views

Postfix - Modify header “Message-Id” twice

So I am trying to do both of the following however Postfix only changes the first Message-Id. With the below example Precedence: bulk wont be added because it's at the bottom. ...
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54 views

postfix sender mailaddress rewrite based on recipient mailaddress

I use postfix to send out mails to my contacts. Usually I use the info address for this and I've set a rule to rewrite my internal address into a valid mail address. So for example me@localhost gets ...
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1answer
147 views

PHP mail (using Postfix) send out to Gmail marked as SPAM

I'm totally new to "Email Systems" and it's concepts. I just use a simple email sending codes via PHP, like: mail("recipient@gmail.com","my header","my body"); I understand this is going through ...
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3answers
198 views

Dovecot with CAcert certificates, Outlook can't connect to IMAP

I have quite standard installation of postfix and dovecot on Ubuntu 12.10. I generated my own certificates and got them signed by cacert.org. The process of creating certs was like below: openssl ...
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48 views

Modify multiple headers before email gets sent out

I send emails through a PHP script and want to modify the headers of the following X-Mailer-LID: X-Mailer-RecptId: X-Mailer-SID: X-Mailer-Sent-By: I am not sure how or what to change them to ...
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28 views

Postfix relay - Remove all traces of main node domain

I am using mydomain.com as the central server and myrelay.com as one of my SMTP relays. I currently have the following set to convert the headers. /etc/postfix/header_checks /^Received:/ IGNORE ...
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2answers
1k views

Multiple instances of Postfix throwing error fatal: unknown service: smtp/tcp

I am trying to configure multiple postfix-2.12 instances on FreeBSD 10.0-RELEASE following the README. postmulti -e init postmulti -I postfix-out -G mta -e create ... This all works I can start and ...
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1answer
72 views

How can I get dovecot to retrieve my email?

I am setting up an email server for my personal domain. There will only be one user (me). I am running a DigitalOcean VPS on Arch, everything is up to date as of yesterday. I have got postfix ...
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1answer
39 views

How to install Splunk for postfix?

I'd like to have a dashboard accessible through my apache server which displays postfix logs. I found Splunk for postfix, but there is nowhere an Install instruction for it. Do I need a full ...
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4answers
15k views

Helo command rejected: need fully-qualified hostname Error

My mail server is in some blacklist cause of spams. I reconfugured postfix. Aften then My customers get this error they can't send emails. 404 4.5.2 <PLLAMNAZIFE>: Helo command rejected: need ...
4
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1answer
527 views

Disable postfix HELO checks completely

I'm trying to set up a mail relay for a cranky old voicemail system. I set up postfix on a vm, enabled relaying, verified that I can telnet to port 25 from the same subnet and send mail wherever I ...
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1answer
77 views

CentOS Postfix changing mail server

I've been using Postfix on my CentOS 6 Server on it's default install settings but I would like to configure it to use the mail server from my existing email. I altered the /etc/postfix/main.cf file ...
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1answer
4k views

How to configure sendmail.postfix to relay on exchange 2010?

I'm currently trying to figure out how to configure sendmail.postfix in Red Hat 6 to work with exchange 2010 relay. I've already configured our exchange server to allow our web server to relay. What ...
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1answer
37 views

postfix: what does /.+/ in pcre do?

I'm rewriting all sender addresses to one address in Ppostfix. main.cf includes this line: sender_canonical_maps = pcre:/etc/postfix/canonical_sender The file canonical_sender looks like this: ...
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1answer
70 views

Postfix virtual_transport vs mailbox_transport

Whats the difference between mailbox_transport key and virtual_transport key? In old examples I've seen virtual_transport used but it did not seem to work on my Ubuntu 14.04 system, whereas ...
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1answer
172 views

Postfix with smtp authentication failing

I'm currently in the process of updating my new server to do the same tasks as my original older server (new server is running Debian wheezy, old server is running Debian squeeze). The issue I'm ...
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42 views

How to test spamming mail server

I've recently configured a mail server which sends emails with SASL authentication. Emails are sent primarily through php scripts using Pear. This is all working fine and dandy however I have seen ...
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1answer
89 views

how to prevent cron job email splitting into multiple lines

CRON has emailed me the extract below : May 12 04:27:54 rpi postfix/smtpd[9343]: NOQUEUE: reject: RCPT from unknown[95.211.213.214]: 504 5.5.2 <WIN-HBAL58UG0JH>: Helo command rejected: need ...
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1answer
60 views

How to change the email address Postfix sends out as

I currently use Postfix on an Ubuntu machine that uses Nagios for monitoring. I'd like to change the email address that Postfix uses to send out. Postfix just relays all its email through our ...
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38 views

Postfix connecting to itself

I have a weird issue with my postfix installation, also I'm having troubles to debug it because I'm new to the topic. When I check my log lines: postfix/smtp[29663]: A929510E76D9: ...