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 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
991 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
51 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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2answers
697 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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9 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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20 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 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
21 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
38 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
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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1answer
37 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
16 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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2answers
39 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 ...
0
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1answer
23 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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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
822 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
27 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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0answers
40 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 ...
1
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1answer
94 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
111 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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2answers
703 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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33 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
27 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
45 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
31 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
14k 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
votes
1answer
479 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 ...
0
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1answer
56 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
30 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
55 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
107 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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38 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
80 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
52 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: ...
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12 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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62 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
81 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
45 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 ...
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votes
1answer
212 views

Problems with postfix/dovecot unable to receive mail

Can't receive mail on my server but can send just fine. From what I can tell in the logs, it complains about timing out. I check the connection externally using telnet from my PC, I can connect to ...
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1answer
128 views

Postfix Mail Relay Server with TLS

I currently have Postfix set up on a Centos 6 server, as a simple forwarding service. Currently in /etc/postfix/main.cf I have set the following: smtpd_client_restrictions = ...
2
votes
1answer
61 views

Displaying emails with mutt

After being able to retrieve emails from an IMAP account on a remote mail server using fetchmail and POSTFIX as an MTA, I am able to see the emails in the spool folder /var/spool/mail/ghassan in a ...
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84 views

Fail2Ban: Sending Mails with CentOS 7 using postfix

I am seeking advise on how to get Fail2Ban installed and configured on CentOS7 using firewalld and postfix for sending reports. I am not in need and even don't want having a fully featured mail server ...
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1answer
39 views

Postfix rejecting everyhing

For some reason postfix is rejecting sending mails and I can't get why. Here are relevant lines of what I used at the beginning: smtpd_recipient_restrictions = check_policy_service ...
2
votes
1answer
200 views

How to prevent bounce of SMTPUTF8 emails

After updating postfix to 3.0, emails with UTF-8 chars in there subjects, are stuck in queue, with the following error: SMTPUTF8 is required, but was not offered by host mail.example.com ...
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0answers
34 views

How to configure dbox mail storage format for a single mail account?

I'm using ldap database at backend and I want to configure my mail server such a way that one mail id i.e. info@domain.au will be stored as dbox format while other mails will be stored in maildir ...
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41 views

how to use postfix alias for sending email

I am not this question has been asked or not, I have postfix running with MySQL and recently i have created "support@example.com" alias email to multiple folks get email, just like distribution list. ...