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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1
vote
1answer
14 views

postfix/dovecot says “postmaster_address setting not given” but it is

I'm trying to configure postfix and dovecot to work together with virtual domains stored in MySQL, but I keep running into this whenever mail is passed from postfix to dovecot. Apr 26 11:54:40 smtp ...
2
votes
1answer
265 views

Fetch all Mail from an IMAP server with Postfix to distribute on local IMAP server

The situation: The constellation: We have a managed, dedicated server from a professional provider. We currently have Tobit David.fx server in use within our local network which fetches all E-Mails ...
1
vote
2answers
1k views

Postfix/MySQL: Unknown User Error

I just followed this excellent tutorial on setting up a mail server with Postfix/Dovecot/etc. I got through it, and I can send email just fine. The domain I'm using is jonah.name. However, I cannot ...
1
vote
1answer
11 views

relearn bayes autolearned spam when mails already processed by exchange

I'm using postfix with amavis and spamassassin to filter out spam before relaying everything to an exchange server. Regularly I got mails which weren't catched by spamassassin, even worse, they were ...
0
votes
2answers
789 views

Current Load is WARNING - why?

On a VPS with 1 CPU core and 2GB RAM, I run a mysql+apache2 for a low traffic website. Sometimes the machine slows down or stops delivering through apache or mysql. That's why I set up nagios which ...
0
votes
3answers
31 views

Server setup for SSL for sending and receiving emails?

I managed to setup one physical server using postfix, dovecot with mysql server. I do plan to use virtual domains and users. Current setup to send and receive emails. SENDING smtp.example.com ...
6
votes
2answers
5k views

Get postfix to forward root's mail

I have an Ubuntu server running postfix. It is not the mail server for my domain. Whenever a cron job runs for root, the output mail is not delivered locally, instead it gets sent to ...
2
votes
1answer
3k views

550 Recipient address rejected: User unknown (in reply to RCPT TO command) - for an external domain

In postfix, I'm unable to receive mails from the specific domain but I'm able to send mails to it. For some reason postfix thinks the domain is internal, correct me if I'm wrong? Sample from postfix ...
2
votes
3answers
6k views

Postfix not delivering mails

I have problems with a recently configured postfix MTA. When postfix starts the following warning appears: postfix/qmgr[5078]: warning: connect to transport private/filter: No such file or directory ...
0
votes
1answer
220 views

How to override an MX value for a particular domain using a transport_maps but have some form of redundancy

I have a postfix mail server and I want to override an MX value for a particular domain. From my understanding this is can be done by the use of transport_maps ...
0
votes
0answers
20 views

Postfix routing mail function recipient domain [duplicate]

i manage mails servers with Postfix and for one client I have delivery problems. So I want to say to Postfix "if mail are for this domain send them not whith the local smtp but with an other" wich one ...
0
votes
1answer
24 views

Postfix block internal communications

I'd like to know how to block my users to send mail to each other but give them chance to send and receive external mail. john@localdomain.com <---> julie@localdomain.com REJECT ...
0
votes
2answers
45 views

Why does my server (postfix) “relay” mails / Have my server been hacked? [duplicate]

Something weird is going on on my mail server. I was mailing a friend and my mail bounced because the ip of my server had been blacklisted. It appears like my server is being used for relaying spam ...
-2
votes
1answer
20 views

Keep receiving abuse messages from my service provider, but cannot find anything in maillog

I keep receiving from my provider abuse messages, that spam is being sent out from my server, but I cannot find anything in the /var/log/maillog files. No information is being logged there about ...
8
votes
1answer
67 views

Email from our server tagged as junk by Hotmail Smartscreen unable to inform Hotmail that it is legitimate

Since more than 1 month ago we are having our email from one of our servers systematically tagged as junk by Hotmail Smartscreen filter. We have taken the following actions/measures without success: ...
1
vote
1answer
32 views

Sympa suddenly changed the domain of all lists

we have on our server sympa with postfix installed. Everything was working fine for about 6 months. On our server were about 100 lists with the format listname@foobar.de Since yesterday the format of ...
0
votes
1answer
44 views

Postfix and dovecot can not receive mail

I setup a mail server (with multiple virtual hosts) on a VPS. I used postfix, dovecot, postfixadmin, squirrel and mysql. I can send mail by squirrel, but can not receive any mail. This is my ...
-1
votes
2answers
245 views

Hostname appearing in email header

I use Postfix as SMTP Server and I don't want my server hostname to appear in the email header, what changes should I do? As you can see in the code bellow, here is the hostname: server1.example.com ...
0
votes
1answer
22 views

Why am I getting a 'fatal: SASL library initialization'

If I turn on smtp_sasl_auth_enable=yes <- yes I get this set of warnings and a fatal for SASL. I can not see why it's also looking for cyrus - which is not compiled in. postfix/smtp[87056]: ...
2
votes
1answer
49 views

Alias to external address in compound with catchall in mydestinations

I have a mail server that accept emails from any domain. This is accomplished by using the following line in Postfix's main.cf: mydestination = regexp:/etc/postfix/mydestinations.reg and ...
0
votes
0answers
29 views

Dovecot cannot create new user “No Domain Given” [on hold]

I am following a tutorial on how to create a mail server with Ubuntu, nginx, Postfix, and Dovecot, located here. From the tutorial, I use a script called adddovecotuser #!/bin/sh if [ ! $# = 1 ] ...
-2
votes
1answer
25 views

Postfix Email Server Manipulation

I have one postfix mail server (postfix-2.10.1-6.el7.x86_64) under CentOS7. Now, our App Department is using it to send sms'es via email. To: 123456789@domain.tld To: 987654321@domain.tld To: ...
-2
votes
0answers
25 views

How to use multiple domains on mail server? Linux Debian [closed]

Hi guys I am running mail server on linux debian but I want to use more domains how should I setup these configs and records? /etc/hostname, /etc/hosts, postfix and DNS A and MX records? thank you for ...
-2
votes
0answers
20 views

Postfix to Use Ipv6 on Rotation Basis [closed]

I want to setup my vps to use ipv6 on rotation basis and make ipv4 as incoming for postfix. i have 16-ipv6 address and 1-ipv4 address Need help in configuring the same in my vps. It has centos 64 bit ...
1
vote
2answers
2k views

Postfix log showing same error every 5 minutes

I have an error in my mail.log (/var/log). I'm using postfix. I am only using it to send email from my web app (Python/Django) for registration (I haven't configured for inbound, the MX isn't pointing ...
0
votes
2answers
40 views

Dovecot/Postfix can't receive emails

All configurations suggest that everything works ok but i can't receive emails... no errors just status=sent (delivered to mailbox) My main.cf is # See /usr/share/postfix/main.cf.dist for a ...
0
votes
3answers
81 views

Configuration of spamassassin on Fedora 21 with Postfix

I was unable to find any help anywhere on installing spamassassin on a modern Fedora system. All the advice out there is old and doesn't apply - so far as I found anyway. The official documentation ...
1
vote
1answer
48 views

Configuration of ClamAV on Fedora Core 21 with Postfix

I was unable to find any help anywhere on installing Clamav on a modern Fedora system. All the advice out there is old and doesn't apply - so far as I found anyway. And, it's not enough ...
-2
votes
1answer
15 views

Configure postfix to run filter only with selected mail else all other mail pass without being filtered

I am running postfix and I'm using ubuntu 14.04. I created php script and i injected it into postfix to filter incoming mail. All run as I wish. But Now I want my postfix to run filter only with ...
2
votes
1answer
22 views

Spamassassin RDNS_NONE matches, but there is a RDNS

I got a a little problem - spam assassin's RDNS_NONE-rule matches on my outgoing mails but there is a RDNS set for all hosts, that are in the delivery-chain. If I send an Email to ...
1
vote
0answers
37 views

opendkim fail | bad RSA signature | verification failed unprotected key

I have fully manageable VPS running Ubuntu 14.04 which hosts websites for several domains. Recently I have tried to add DKIM signatures to avoid spam filters. I've followed ubuntu-postfix-dkim ...
5
votes
1answer
57 views

postfix dovecot disable lmtp

I have 3 servers. 1 MX server with postfix and 2 dovecot servers. MX server receive emails and then serve them through LMTP to specific dovecot server. All mailboxes from same domain are on same ...
1
vote
0answers
38 views

How can I spam-filter outgoing email on a postfix server?

I'm in the process of setting up a solid mail system. It's my second time setting up something like this, so I already have a basic understanding of how to approach certain topics. I'm using postfix ...
-1
votes
1answer
21 views

Postfix aliases db: No such file or directory

I am trying to use a postfix on a local Ubuntu 12.04 with ZoneMinder. I installed from Ubuntu Desktop the Postfix package and its dependency. Now if I try to send email with following command it ...
2
votes
2answers
54 views

Fail to trigger my php script when mail received by my Postfix

I am running Postfix mail on ubuntu 14.04.1. I want to "trigger a PHP script when Postfix server receives a mail" After investigation and the help of many tuto, . I have configured "postfix" & ...
2
votes
1answer
702 views

Postfix: change sender in queued messages

Following a complete re-installation we got a problem with the configuration: the sender address was wrong and some recipients (mail servers) rejected them. So there is a bunch of mails stuck in the ...
1
vote
3answers
1k views

forward all mail on a specified domain to script

I run a disposable e-mail service that accepts all incoming mail and forwards it to a PHP script that stores it in a database for people to view. Before now, I have been on shared hosting with cPanel, ...
-1
votes
2answers
43 views

Source of syslog bind query denied message [closed]

What is the cause, and how can I stop this request on example.com from my ip (xxx.xxx.xxx.xxx) being continually repeated in /var/log/syslog? Apr 14 20:37:10 example.com named[1663]: client ...
1
vote
0answers
27 views

Postfix relay smtp to 2 relayhosts for same domain [duplicate]

have a setup in which Postfix relays mail for a specific domain to another mail server (Exchange) via the usual transport file: # /etc/postfix/main.cf transport_maps = hash:/etc/postfix/transport # ...
-1
votes
1answer
102 views

opendkim public key not available [closed]

I'm having problems with my mail server sending or reciving mails from/to hotmail can anyone explain for newbies what all this errors on postfix log/gmail header/website dkim validator are telling me ...
1
vote
1answer
86 views

Postfix - relay locally generated mail but accept mail incoming from GApps for the same domain

I know the way to disable all local delivery is to remove the domain from "mydestination", which will cause all mail to be relayed through whatever relay I setup. But I want postfix to accept all mail ...
9
votes
3answers
17k views

Is Postfix the same thing as Sendmail?

I have postfix setup on my server so that I can send outgoing mail using the command-line: mail -s "Subject" address@example.com Is this using sendmail or postfix? Is "sendmail" just a software ...
-1
votes
0answers
10 views

opendkim not signing emails [duplicate]

I am configuring opendkim to sign my outgoing emails on my CentOS 6.6 server. I can send email out and get them fine, but I want to implement as many measures as I can to ensure my emails are ...
7
votes
4answers
4k views

SMTP message rate control on Ubuntu 8.04, preferably with postfix

Maybe I am chasing a bug but I am trying to set up a smtp proxy of sorts. I have a postfix server which receives all the email for a collection of servers/clients. It them uses a smarthost ...
1
vote
2answers
327 views

Postfix how to triggering my script when outgoing email status is sent?

I want to run a program when postfix has successfully sent out a mail (local or remote). I would like to pass the headers to program and if possible also the destination ip or address (exclude spam ...
2
votes
0answers
54 views

postfix vs dovecot: SASL fails “authentication failed: Connection lost to authentication server”

I am trying to set up an email server that authenticates against an Active Directory server. I have successfully set up Postfix and Dovecot so that I can receive, read and send email for all accounts ...
1
vote
1answer
25 views

postgrey configuration on Fedora Core 21 is very different, and not documented

In upgrading from Fedora Core 16 to Fedora Core 21, one of the challenges has been getting postfix working with postgrey. I still don't have it working after many long hours focused on it. In the old ...
3
votes
1answer
34 views

Restrict postqueue access to admin user

I'm running postfix on Gentoo as mailer daemon. During investigation of some queue pileup I found that /usr/sbin/postqueue is executable by all users on the system, it happily outputs the current mail ...
-4
votes
1answer
72 views

How to enable `dbox` for a particual mail account?

I need to enable http://wiki2.dovecot.org/MailboxFormat/dbox/ formailarchive account. I want to enable dbox only for the mailarchive account & the other accounts continue to use the Maildir ...
-1
votes
0answers
20 views

Postfix server routing outbound mail through spamassassin

I had a Postfix smtp server configured and working properly with Spamassassin and OpenDKIM functioning normally when I decided to also enable Postscreen. In doing so, all my outgoing emails are now ...