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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Authentication failure with postfix and sasl using sasldb

I'm really not sure what my issue is. I've checked several guides, and I am sure I have set this up correctly, including config fails, restarting the service, permissions etc. OS is Ubuntu Server. ...
4
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1answer
1k views

Postfix mail logs keep showing “NIS domain not set”

I just set up a new email server using Postfix and Dovecot. I've been troubleshooting, and this line keeps appearing in my logs (specifically, mail.info and mail.log). What is a NIS domain, and how do ...
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2answers
144 views

How to hold mail for only certain users with postfix?

I would like to hold all outgoing email for certain users (all users except a few) for a set period of time, or until I approve (even if that means changing a config and restarting the service). Users ...
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145 views

Postfix cannot start but dovecot is ok

My postfix service cannot start. Here is message: Job for postfix.service failed. See 'systemctl status postfix.service' and 'journalctl -xn' for details. And here is service status: ...
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2answers
214 views

Fetchmail with local Postfix on Home-Server

a small question... I have a fully configured postfix server which have a few domains, few users, and much more. Then I have a smart host which receives all mails and send all mails. For example ...
4
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1answer
103 views

Add warning to emails received by Postfix without TLS

Is it possible with Postfix to add a warning to all emails received over a cleartext (non-TLS) connection? For example modifying the subject and/or adding a custom header.
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34 views

Postfix: enable authentication through port 25

I would like to configure postfix so that authorized devices can only send email through port 25. By default this is not so. Postfix currently relays emails through 587 TLS. My plan is to use port 25 ...
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19 views

Hosting email for multiple domains on the same server? [duplicate]

I have a single server with dovecot and postfix installed to handle email. If i create a user on the OS (centos) i can then use this user to log into any email client and send/receive emails. The ...
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1answer
184 views

Every email that I receive gets sent to root@example.com (Postfix on CentOS)

I've got a bit of a strange problem going on. It seems that all emails I receive never make it to my actual inbox. They go to the root email. (in my case this is root@dougbeney.com) Here is my ...
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1answer
405 views

I can send mail but can't receive it (CentOS with Postfix)

I followed this tutorial and was able to create a mail account that can be configured in an email client. The problem is that I can't receive any messages to my inbox BUT I can send messages ...
2
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1answer
91 views

Can't send local mail message between users on linux

In http://unix.stackexchange.com/a/21336/99621 it says that if you do echo 'body' | mail -s 'subject' myuser It will send a mail message to the myuser linux account on the local system that this ...
2
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1answer
418 views

How can I have multiple email accounts from different domains using Postfix?

I just made it through this helpful article and successfully have my mail server set up with a single domain. What I'm wondering now is how I can be able to add multiple email account for different ...
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2answers
44 views

Regex on Postfix using Centos

I have a Centos server running only postfix. I want to filter out mails containing word gratis or grátis or grétis or grâtis. The second letter is the problem. So I used this rejex: ...
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45 views

Amavis Spam Summary

I recently switched from the classic SpamAssassin to the "advanced" and more featured "Amavis" (which includes Spamassasin and a virus scanner). I'm missing a great feature of SA: the spam report. ...
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117 views

CWP Postfix send mail the host does not accept mail from localhost

Plesase help me, below postfix config: alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases broken_sasl_auth_clients = yes command_directory = /usr/sbin config_directory = /etc/postfix ...
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1answer
240 views

Where does Postfix store attachment inside email?

I am trying to find the folder where Postfix store email's attachment but I can't seems to find it. Anyone know how?
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30 views

How to direct mail by From: address?

I have postfix running and directing mail to a smarthost at my ISP. I would like email with a particular outgoing email address to be forwarded to another server, specifically GMail; all the rest ...
2
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1answer
1k views

CLIENT wrappermode (port smtps/465) is unimplemented

I am getting the following error when I try to send email using a relayhost from a CentOS 7 server using postfix: Oct 19 19:53:08 localhost postfix/pickup[7174]: 64DAF1A53CB: uid=1002 ...
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1answer
127 views

enabling smtp on port 465 and imap on port 993 for webapps running on centos 7

A CentOS 7 development server is used for prototyping webapps that send and receive email using JavaMail to connect with a remote mail server elsewhere on the internet. The remote mail server uses ...
1
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1answer
116 views

Postfix is not releasing email

I got a Ubuntu 14.04 server and I am testing Postfix. My /var partition got full at a certain moment, but I could still send some emails (locally and to a different host too). Postfix accepted for ...
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0answers
99 views

Postfix SMTP client won't authenticate with AUTH LOGIN

Log extract: 127.0.0.1[127.0.0.1]:11127: 250-AUTH LOGIN PLAIN maps_find: smtp_sasl_passwd: hash:/etc/postfix/sasl_passwd(0,lock|fold_fix): [127.0.0.1]:11127 = XXXX smtp_sasl_passwd_lookup: host ...
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0answers
24 views

Postfix sending spam [duplicate]

I am running Ubuntu 14.04.3 with apache2, postfix and dovecot. Today (about 24 hours ago) my server started sending spam (like 10-20 mails to random addresses every 2-3 minutes) and I got blacklisted. ...
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129 views

gmail Internal parse error: Illegal envelope To: address (invalid domain name): root@[1.2.3.4]

Sending e-mails to my own gmail account from a server without a domain name. When using internal hostname basinsrv.localdomain, cannot reply. Tried these non-default settings in main.cf: myorigin ...
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1answer
157 views

Postfix does not work with TLS but Dovecot does

I have posted this question on Sever Fault but as soon as I mentioned that I have a control panel installed on my server (even though it has nothing to do with the issue) my question was closed. Here ...
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111 views

One account stopped receiving emails - postfix / dovecot

My server was working properly but now one account is not able to receive emails. Forwarders are working on the same account. I have postfix/dovecot installed on ubuntu with this guide: ...
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1answer
178 views

Postfix - envelope and body header

I have got a question regarding how one can protect himself from fake e-mails that are forged by putting in a fake message header while keeping normal envelope header? The issue is that what is ...
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3answers
649 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
31 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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40 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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272 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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32 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
572 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 ...
0
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1answer
209 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
123 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 ...
0
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1answer
66 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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48 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
273 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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111 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 ...
0
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1answer
49 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
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1answer
340 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
43 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
92 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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641 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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22 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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40 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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226 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 ...
0
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1answer
309 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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132 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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663 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 ...
0
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1answer
71 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 ...