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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178 views

postfix filter incoming mails based on 'mail from' and 'rcpt to'

I want to reject emails to my postfix server based on more than one criteria, specifically I want to block emails from Russian email addresses (or that contain Cyrillic characters, but this I suspect ...
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1answer
27 views

Mx not resolving to IP when pointing to its own domain

I'm running postfix and have setup previously a mail server on a domain e.g. mail.firstdomain.com. Recently I added another domain e.g. mail.seconddomain.com. In the MX records for the second domain, ...
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0answers
28 views

How do load balanced mail servers function with each other and clients?

If there are two mail servers running postfix/dovecot as both primary in a load balanced configuration, how do they function with each other and with clients? For example, my DNS record will look ...
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182 views

Postfix/Dovecot configuration Problem

i've a problem setting up my postfix with dovecot. After Login via Outlook and Thunderbird im getting a timeout. This is how my configuration looks like for postfix: postconf: warning: ...
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29 views

SSL/Secure MySQL access with Postfix/Dovecot Mail Server

I have two MySQL servers setup, one in each data center in the US. The east coast db is the master and replicates to the west coast slave db over SSL. When I try to connect my mail server to the ...
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1answer
244 views

Postfix: Recipient address rejected from another domain zones

I have successfully installed Postfix/Dovecot with virtual domains and TLS support like this article describes - https://geekpeek.net/postfix-with-dovecot/ ... But faced with the problem. I can send ...
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1answer
104 views

Sending email out at a specific time

I'd like to write emails now and have them go out at some specific time in the future, eg. when the office opens in the morning. What would be a good way to do that ? Most user agents don't support ...
0
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1answer
64 views

mail delivery goes wrong with mx lookup

in Plesk (11.5) you can deactivate mail service on a specific domain. I did this, because: At my domain provider I configured the domain DNS settings like this: A-record: IP points to web server with ...
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1answer
44 views

Postfix Email Troubleshooting

I'm having some trouble changing the server I use for Postfix emails. I've installed postfix on the Linux server (CentOS 5) and setup as follows. I added the settings to the /etc/postfix/main.cf ...
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0answers
36 views

Cyrus Performance Tweaks?

Okay guys, I have put a lot of research into this so bear with me. Here's what I am up against. I have been working with RC for a long time and I know some awesome SQL tweaks that work wonders, etc. ...
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2answers
132 views

Postfix on Centos7 not accepting Public port 25

I have a new mailserver (postfix) on a new CentOS7 install. I can connect (telnet) on 127.0.0.1 port 25 and on the public IP from the local machine but not on the public IP outside the machine. I use ...
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0answers
81 views

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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1answer
36 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 ...
3
votes
1answer
174 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 ...
2
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0answers
39 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 ...
2
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1answer
70 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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0answers
385 views

My server email can't connect to Outlook or Thunderbird

I have postfix for smtp, and dovecot for imap/pop with FROXLOR. I have configured correctly, but I can't succeed in configuring an account in client mail programs. From Outlook, I receive Log on to ...
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0answers
20 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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0answers
30 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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132 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
219 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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0answers
109 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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0answers
493 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
53 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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1answer
586 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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3answers
150 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
553 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
22 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
67 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. ...
3
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3answers
326 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
132 views

Postfix - Modify header “Message-Id” twice

I am trying to do both of the following actions. However Postfix only changes the first Message-Id. With this example Precedence: bulk won't be added because it's at the bottom. ...
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1answer
332 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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0answers
149 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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0answers
106 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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0answers
59 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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1answer
240 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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3answers
643 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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1answer
129 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
74 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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1answer
56 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: ...
0
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1answer
149 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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0answers
66 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
667 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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1answer
112 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 ...
1
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1answer
268 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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0answers
43 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: ...
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0answers
16 views

Trouble with postfix configuration to communicate with ruby application

This could be such a wide range of things but i hope posting here would narrow it down, i have this application installed and running in a web browser https://bitbucket.org/naushniki/qamail/src and ...
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0answers
100 views

Centos 6 and postfix: Internal emails deferred / telnet timed out from SSH

The problem is, that I have a VPS with centOS 6 installed, and I can send emails to anyone, but my own exchange server, Apr 29 11:50:30 amazonnet postfix/smtp[16535]: 2B6FF3CC49A: to=, ...
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0answers
172 views

Postfix/Dovecot import mail from Gmail

I setup an iRedMail server on Ubuntu 14.04. My company currently uses Gmail but wants to switch to a cheaper solution. I set up the server with an LDAP DB, and I'm using Postfix and Dovecot for the ...
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0answers
92 views

Postfix problem with sending and receiving emails

I have had problems for one week with the email server Postfix. This came after running the antivirus ClamAV with the remove option on. When reading the mail log I keep getting the error message ...