Postfix is a free and open-source mail transfer agent (also "MTA"), written in 1997 and still actively developed.

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postfix - warning: connect to transport private/smtp: Connection refused

I have been having trouble with my postfix+dovecot mailserver. Every time I try to send an email to a different server (gmail etc.) I get the following messages in the log: postfix/qmgr[28918]: ...
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6 views

Outlook 2013 connects to Postfix/Courier server and can send emails, but doesn't open Inbox

I've configured a Debian server with Postfix and Courier along with SquirrelMail for a client. I've configured the server with his email accounts, and these are accepting emails without issue. I've ...
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7 views

Send from multiple addresses with Dovecot SMTP

I have a Dovecot + Postfix email server with multiple aliases. I'd like for users to be able to send from any of their aliases. Currently, you can only have one sending email address per user. Is ...
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9 views

postfix how to allow domain but block subdomains

I have a postfix mail gateway that passes mail to and from a domain. I want it to reject mail to or from subdomains of that domain. Is there a simple way to do that?
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17 views

Postfix multiple transport maps for one domain

I have Postfix set up with Dovecot for multiple domains. One of these is just a catch-all to relay email to my personal gmail account, as an anti-spam measure. All my transport mappings are currently ...
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14 views

How configure spamassassin to deliver spam to a spam folder [duplicate]

I created a small mail server following these instructions: https://www.linode.com/docs/email/postfix/email-with-postfix-dovecot-and-mysql for mail server and ...
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5 views

Conditional relay with credential based on domain recipient?

I use postfix to send email directly, but sometimes outlook.com won't deliver my business email messages. After changing the SPF record, the delivery succeeded, but goes to the recipient's Spam ...
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17 views

Dovecot imap connection closed by remote host

I have setup postfix and dovecot on my ubuntu 14.04 on a digitalocean droplet. When I telnet to my localhost on imap, I get the output below, can anyone help me.. telnet 127.0.0.1 143 Trying ...
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17 views

fetchmail doesn't get mail from provider

Somehow I can't get fetchmail to work properly. It won't get email from provider but it connects to network properly. # Configuration created Tue Feb 10 10:18:32 2015 by fetchmailconf 1.52 $Revision: ...
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16 views

Postfix private relay

I've setup my postfix + dovecot server successfully and can send/receive mail however I would like to setup a cluster of 2-3 extra servers which are used for outgoing mail. I have looked into options ...
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13 views

Postfix mail sent to SPAM in Yahoo and Outlook (SPF, DKIM, DMARC also configured) [migrated]

I have implemented DMARC in out email server and got the response from some of the email domains as follows, <?xml version="1.0"?> <feedback> <report_metadata> ...
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17 views

Postfix SMTP mail is sent to SPAM

I have installed postfix mail server in ubuntu machine. I configured the mail server as well as DNS properly. Mails are sent from our mail server properly, but all the mails are listed in the spam ...
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10 views

Masquerade address based on destination with Postfix

How do I set postfix to replace the "From" header based on the destination domain? For example: Sending email from me@domainA.com to you@domainB.com should be changed, so as to appear as if the email ...
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2answers
56 views

Can't connect to my email server

Recently I transferred my domain to NoIP, and I had to create a mail server. (I had to transfer to noip because I can't setup a static/fixed ip as I am particular not a business, and I don't have a ...
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28 views

How to configure postfix Ubuntu with a tk domain

I have a free my.tk domain and I want to send emails with it using postfix running on my Ubuntu server. Please look at the my.dot.tk website and post a step by step tutorial on how to configure ...
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2answers
21 views

What have I done wrong with my Postfix config?

My mailserver has been sending emails fine and dandily to newsletter subscribers via the Mandrill app, but I have not been receiving emails on the domains I want, I only want mails to go to the user ...
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138 views

Postfix - SMTP mail delivery failed with “Connection timed out” error

I have installed postfix mail server in ubuntu machine. I am facing some issues with the mail sending to other domain mail servers (Google, Yahoo, Outlook...). I am using virtual domain to send the ...
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15 views

Forwarding Postfix email to multiple users not working

My /etc/postfix/virtual currently contains (emails obscured for privacy) teals@example.com example+teals@gmail.com, other_example@gmail.com, third_example@gmail.com example@example.com ...
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2answers
71 views

Why my Email server Mark as Spam?

Hi I have installed emails sserver and I was configuration with SPF, DKIM not relay. but still mark as spam when sent into another mailserver. here my header when sent into gmail. Delivered-To: ...
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19 views

Outbound mail queue lifetime standards

Description: I am trying to setup an email server with qmail and postfix as a MTAs. I am using postfix to handle my outbound mail flow traffic. Problem: I have set postfix maximal_queue_lifetime to ...
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33 views

Softfail with properly configured SPF

I have just set up a mailserver with postfix+dovecot. Sometimes, when I send an email, I get an SPF softfail (the other times, the test passes). It seems postfix isn't communicating the IP address ...
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128 views

How to configure to send emails from localhost pc with postfix xampp and xubuntu configuration

I am building some website and for testing purposes i need to configure somehow to be able to send emails from my pc. I have xubuntu installed on my home pc and xampp for local development. I have ...
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1answer
23 views

Avoiding Mail Server Inconvenience

We run our own web server (Apache on Ubuntu) for a bunch of non-commercial websites, but there was no mail transfer agent installed on it, since they are complex to configure and maintain. You need to ...
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78 views

macosx: How to unblock SMTP port?

In /var/log/mail.log I see runs of time-out errors in quick succession, like this Dec 13 15:50:31 myserver postfix/smtp[2911]: connect to alt2.gmail-smtp-in.l.google.com[74.125.138.26]:25: Operation ...
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27 views

Postfix - relay issue on my end?

Maybe someone experienced more than me in Postfix can help me out a bit. mail.log:Dec 11 22:14:36 server596 postfix/smtp[31301]: 3A5BC17AC00D: to=<int@njsbw.com>, ...
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27 views

Postfix error: proxy-reject: END-OF-MESSAGE: 451

I installed mail server by using the fufix bash install script. I cannot send and receive messages. Keep getting this message in log: mail1 postfix/smtpd[25142]: proxy-reject: END-OF-MESSAGE: 451 ...
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1answer
31 views

postfix relayhost send as user@example.com

I have a working setup of a postfix installation, but because I have a dynamic IP, gmail refuses any messages I send from my server. I searched arround and found that with relayhost I can send ...
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48 views

How can I have Postfix add a header to all outgoing mail based on command?

I would want to have postfix to run the command: /usr/bin/hashcash -mXb 26 <RECIPIENT1> <RECIPIENT2> ... <RECIPIENTn> and add the output of this command as a header. How can this be ...
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28 views

msmtp complains no auth method found

msmtp output: <-- 220 example.com ESMTP Postfix (Ubuntu) --> EHLO example.com <-- 250-schemacs.com <-- 250-PIPELINING <-- 250-SIZE 10240000 <-- 250-VRFY <-- 250-ETRN <-- ...
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54 views

How can I set a conditional relay in Postfix?

We have Postfix setup to relay mail to our hosted Internet facing mail server. Is it possible to configure Postfix to relay mail differently based on the destination? We currently have it working so ...
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1answer
19 views

POSTFIX is possible to detect when mail was read

I have a problem that I need to check when in the morning the first mail of some account was read. We are using POSTFIX mail server and system is UBUNTU. is this possible?
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50 views

Multiple postfix instances one host

I have a server on which i need to add setup a second postfix configuration to send e-mail (doesn't have to receive) that's being sent in from a PHP web application that's hosted on the server aswell. ...
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33 views

How can I filter spam based on the return path in an email with clamav/amavis/spamassassin/postfix

I run an Ubuntu 12.04 server that hosts a few sites and has a handful of mail users. For email, I am using postfix/dovecot with clamav/amavis/spamassassin for anti-spam/virus. This works pretty well ...
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190 views

Postfix SMTP message being marked as SPAM by Gmail and Yahoo

I'm having a problem getting my low-volume of legitimate email messages through the SPAM filters of Gmail and Yahoo. I have followed Gmail's guide here: https://support.google.com/mail/answer/81126 ...
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1answer
25 views

postfix problems with pattern in virtual file

We are trying to forward all emails to a specific email address. I think everything is set up okay, such as 'main.cf' and 'virtual-regexp' files. If we put the following in the 'virtual' file, the ...
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73 views

Some mail from newly setup mailserver flagged spam by GMail

I have just setup a new mailserver using Postfix on CentOS 7, the machine serves as mx for two domains, domain1.com and domain2.com. The server's hostname is domain1.com and it has the correct PTR ...
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38 views

Limit postfix e-mail-address to only receive from one domain, discard everything else

we have a new copying machine in our office, and it is capable of fax per mail and print per mail. what i want to do is to configure postfix in a way that our copier is capable of sending anywhere (so ...
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281 views

Why does postfix give “lost connection after EHLO” error when Gmail tries to connect to my SMTP server?

I'm trying to setup my gmail account so that I can send emails that appear to come from another email address I own (myuser@mydomain.com). Instructions to do so are here. When I try to do it, it ...
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2answers
746 views

Postfix SMTP SSL config: Can't send email but can receive it with SSL

I am trying to finish configuring my postfix/dovecot mail server that sits behind my home's router/firewall. I'm on Mint/Ubuntu 12.04. I'm close. I can connect/retrieve emails via SSL but can only ...
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91 views

Postfix can send but not receive mail

I just finished following this tutorial to set up a postfix mail server on ubuntu 14.04: https://www.digitalocean.com/community/tutorials/how-to-install-and-setup-postfix-on-ubuntu-14-04 When I ...
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56 views

Postfix on CentOS - Cannot receive emails

I'm trying with no success to setup Postfix on my server so I need some help (first timer here). Basically I cannot receive emails from anywhere. If I send an email to myself or to another address ...
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1answer
191 views

Can't receive mail, but can send mail? Centos 6 Postfix/Dovecot

I followed this tutorial to setup my webmail on centos 6: https://www.rosehosting.com/blog/mailserver-with-virtual-users-and-domains-using-postfix-and-dovecot-on-a-centos-6-vps/ Everything is setup ...
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2answers
84 views

How to deal with mail senders failing on STARTTLS?

I try to use my mail server richtercloud.de for subscriptions to vger.kernel.org mailing lists. I set up postfix 2.11 running on Ubuntu 14.04 and sending and reception works. I set up postfix to ...
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29 views

Configuration step by step of Postfix with chroot with debian amd64

Please, I want to configure mailscanner with postfix, but in the documentation, they said "configure postfix with chroot", but i can't do it Is there any documentation that explain step by step for ...
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How to add new 'From' email id each time sending email using PostFix server

I am new to PostFix and have setup PostFix as a server recently. In the testing, PostFix is working fine and relaying the emails with 'From' email address stored in the PostFix credentials files likes ...
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1answer
71 views

I'm having an issue with all postfix mail being rejected with “relay access denied” - Centos 6.5, postfix 2.6.6

If I use smtpd_recipient_restrictions, everything gets rejected with "relay access denied". If I use smtpd_relay_restrictions, everything gets through and ignores the whitelist. Not sure what's up; ...
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1answer
523 views

Fatal error (bad field count) while configuring Postfix

I'm using this tutorial to configure a mail server using postfix, dovecot and mysql. While configuring Postfix I have to uncomment the following lines and then restart Postfix with service postfix ...
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86 views

dovecot WILDCARD SSL (certicate.crt, private.key, intermediate.crt) not working

I have installed dovecot and postfix and got it working, but when I change the ssl_cert_file, ssl_key_file and ssl_ca_file dovecot configuration to my WILDCARD SSL certificate (working on apache) it ...
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26 views

Postfix not working with non self signed SSL Certificate

I have installed postfix and generated a self signed SSL certificate, it was working, then, I tried to configure it to use my WILDCARD ssl Certificate that is configured to apache2. Then I started ...
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1answer
22 views

Postfix bcc to ldap address

I am using Postfix with AD, and I want to send a copy of every email to their manager. Therefore I have these entries: cn: staff1 mail: staff1@company.com manager: ...