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

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Email Spoofing - Bounce back messages

A client of mine (onto my mail server) receive back some bounces for mails that he haven't never sended to non-existent addresses. Of course, inspecting the header, the outgoing server isn't mine. I ...
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3answers
1k views

Debian sendmail Cannot write

I had a working sendmail configuration on my debian server, i tried to put a postfix to receive email but abandoned, remove postfix, re install sendmail but nothing work anymore :( here is my ...
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195 views

Changing X-Original-To: header in postfix

I am using a virtual file with my postfix to redirect all mails coming to my domain to a user My virtual entry looks like this @domain.com root Now the X-Original-TO header shows root@domain.com. ...
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76 views

Understanding Postfix and Courier IMAP

I'm setting up my own mail server, and I'm very new at this... and I'm getting lost. I need your help in determining some parameters the way I know them already, because the configuration is huge. ...
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2answers
5k views

Monitor Postfix outgoing mail delivery

I'm using GNU Mailman with Postfix to run a mailing list, and would like to monitor the delivery of outgoing mail, that is: for each mail sent from the list, check whether a 250 (OK) message was ...
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1answer
1k views

Cannot connect to pop3 or imap with Dovecot

Connections are refused on my server. Note: I am trying to connect from localhost here. Command I'm trying to use to test: user@hostname:~$ telnet localhost pop3 Trying ::1... Trying 127.0.0.1... ...
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43 views

Simple multi-domain email management under linux

I was looking to a way to deploy a simple email ecosystem, with postfix, dovecot and antispam/antivirus milters in a fast and easy way, without configuring them one by one manually. I saw iRedMail, ...
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1answer
81 views

Where are the docs for solid-pop3?

I'm trying to install solid-pop3d on an Ubuntu server, but I am having a very hard time finding anything online by way of documentation. I've heard that the project is very active, yet there does not ...
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2answers
153 views

Simple postfix relay server

I want to set up a postfix server that relays emails to another email address. I have an ubuntu server set up, a domain name (myvps.be) and a database of users. I want to make it so that when ...
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231 views

Using both maildir and .forward for postfix

I have a postfix server for handling mail, and trying to finalize my user configuration. If I put a .forward file in a user home directory to redirect his mail, it works. If I remove it, to use the ...
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2answers
5k views

Changing default from e-mail address for system accounts when using sendmail

I would like certain system accounts (root and www-data) to have the header From: Example Company <noreply@example.com> when e-mail is sent using either the mail or sendmail commands, or from ...
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1answer
2k views

Postfix: SMTP, use port 587 rather than 465

I have set up a mail server on AWS EC2 using the instructions from Flurdy: http://flurdy.com/docs/postfix/ it has mostly gone well. My issue is that I would prefer to use SMTP port 587 with TLS ...
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1answer
141 views

gmail reply to forwarded mails fail

I have a mail server postfix, and for an account i forward mails to gmail. user1@domaine1.com => user@gmail.com The forward works, but in gmail when I try to reply to forwarded mails I have a fail : ...
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20 views

Remote reconfig email clients from mail server

Today I got very interesting info. My friend use Outlook and Android Email application for using mails. Strange thing happed that Mail Administrator changed passwords for accounts, and without sending ...
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1answer
306 views

Disable Clamav / Amavis / SA in Postfix on Debian

I would like to disable Clamav / Amavis / SpamAssasin in Postfix on Debian Squeeze 6.0.8 as I have I outsourced my AV to other server. I tried commenting content_filter and receive_override_options ...
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108 views

Postfix receives mail, seen in /Maildir/, but no mails when connecting through Thunderbird (IMAP)

/var/log/mail.log seems fine to me Dec 10 16:30:21 server dovecot: imap-login: Login: user=<mailtest>, method=PLAIN, rip=my.ip.addr.xxx, lip=ser.ver.ip.addr, mpid=23682, TLS, ...
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54 views

Query regarding smtp_fallback relay in postfix

I have 3 postfix instances in my server. I am trying to configure my server in such a way that, the deffered mails in 1st instance need to be relayed to the 2nd instance. Thereby i can reduce the ...
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1answer
76 views

configure postfix mail server in ubuntu server

Is that possible to setup postfix mail server in my system(ubuntu server) with the details I have domain name e.g: testdomain.in testdomain.in is pointing to xxx.xxx.xxx.xxx(our cloud based windows ...
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1answer
65 views

DKIM configuration on Debian

Due to the fact that many e-mails we send with our company address do not get delivered, rejected or marked as spam, I searched for a solution on the web. One of the solutions I found was to use DKIM ...
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1answer
202 views

can not receive mail by own created mail from gmail

I want to create my own mail ID like myname@mydomain.in instead of paying extra to google for extra mail ids as I have already myname@mycompany.in. Things I have are mydomain.in(I paid for this ...
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1answer
135 views

How to use a different SMTP mail relay for sending emails with a message size over 10MB

I use Amazon SES as a mail relay service for my emails as my server host blocks connections out on port 25. SES works great, however occasionally users send large attachments (>10MB). Whilst I could ...
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4answers
1k views

What all is required for email from my server to pass through spam filters?

I have a serverbeach server with postfix installed. The hostname is something like p3204059.pubip.serverbeach.com The FQDN is specified as NONE for the server itself. I clicked change ptr record, ...
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1answer
58 views

ip set for smtp mail failed

I config smtp server with postfix , and Debian 6. I set 1 ip from 4 Ips of server for smtp server mail.mydomain.com xxx.yyy.zzz.hhh but when I send mail with smtp server , Destination server ...
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3k views

Postfix smtp send error - what's wrong here?

I am currently setting up a new virtual private server with Debian Wheezy. I managed to install postfix, dovecot (IMAP) and MySQL. Up to now, I can successfully login via SSL with an external mail ...
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1answer
363 views

Redirect 'host-based' requests to a port (inside a docker container)

I'm trying to achieve this fun project of having multiple 'postfix/dovecot' instances inside a docker container. I'm searching for 'something' that would redirect any incoming request on port 25 ...
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3answers
211 views

Every minute incoming, rejected connections to SMTP

I have a feeling my server is being lazily DDoS'ed, though, I have never experienced it before, so, I may be wrong. Every minute, my journal logs the following 3 entries: Nov 05 21:10:47 ...
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1answer
540 views

Piping inbound email for specific users through a script with postfix

I'm trying and failing to setup postfix so that inbound email to a specific address is piped through a script. It's all new to me, and I think I'm simply failing to understand the complexities of ...
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1answer
5k views

Email test deferred (mail transport unavailable) with ClamAV

I'm trying to set up a simple new mail server; when I send a test email to the server the email is getting hung up during delivery (user mapping is found) and the email is never found in ...
2
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1answer
9k views

NOQUEUE: reject: Relay access denied

I recently setup a mail server following the instructions on linode.com (https://library.linode.com/email/postfix/postfix2.9.6-dovecot2.0.19-mysql) except I am using postgreSQL instead of mySQL. ...
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1answer
471 views

Postfix: change recipient_delimiter with virtual_mailboxes

I have an email setup using Postfix, Dovecot, PostgreSQL. I am trying to change the recipient_delimiter to be - (dash) instead of + (plus) but the address are being rejected. In order to get the + ...
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1answer
382 views

postfixs email rejected with forged ehlo/helo error 550

i have multiple ip addresses and domains and configured postfix to use the correct ip address according to the sender-address using a map now there are still servers answering with a forged 550 but i ...
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376 views

mozilla thunderbird can receive emails but cannot send (imap/postfix)

i run a dovecot imap server on an ubuntu 8.04 machine (old, i know, but there's no chance of an upgrade any time soon). anyway, all was working smoothly until i rebooted the server the other day and ...
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1answer
772 views

Mail server configuration on Ubuntu 12.04

This is kind of a basic question and it might sound stupid but I am new to this whole mail server thing and I am trying to learn how to setup one. I have a VPS server which runs Ubuntu 12.04 ...
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1answer
222 views

Postfix error logs with random emails on my domain

I was trying to figure out why my MySQL service keeps crashing, and a quick look at the logs shows hundreds of postfix errors like this: postfix/smtpd[59256]: NOQUEUE: reject: RCPT from ...
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0answers
80 views

Can I reconfigure postgrey to keep mail instead of rejecting it?

I have postgrey on my mailserver and it works really well. I actually suspect it works a little too well in that there are quite a lot of faulty mailservers out there that don't bother retrying. ...
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1answer
482 views

post fix to send and receive mail to gmail using free domain and private ip

I would like to configure mail server to send and receive mail from all domain such as gmail and yahoo using postfix in my laptop. Should I have a paid public static ip address for this purpose? or ...
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411 views

Connection timing out when connecting to Milter service

I'm using a VPS with CentOS 5, containing Postfix and OpenDKIM. I have set up OpenDKIM using this guide. Everything seems to work properly as the log in /var/log/maillog does not report anything other ...
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60 views

Can't run postfix on Mountain Lion due to missing system_user_maps.db

When I start postfix, I see in /var/log/system.log the following error: error: open database /etc/postfix/system_user_maps.db: No such file or directory How should this file be created so that ...
2
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1answer
131 views

Arch Linux ARM: Send email after successful ftp transfer

I have a script running on my box that checks every 5 minutes to see if a certain time type was uploaded to a folder on my Ftp server. I would like for it to send an email when the transfer is ...
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227 views

postfix on Linux won't restart after kill postfix-process

Briefly: I had a problem with postfix. That is why I killed the process. Problem now is that I can not start it again. How can I solve this? And what additional information do you need? Output from ...
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2answers
1k views

Do I need postfix for /var/mail/root to work?

I want crontab to log errors. As far as I know, this is being logged to /var/mail/root, but it doesn't seem to be working. Do I need to install postfix for this to work?
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1answer
69 views

Why use googlemail smtp server instead of your server?

I ran into this post: Getting Postfix to work on Ubuntu with Gmail which describes how to use gmail as relayhost for postfix. And I'm wondering what would be the benefits of doing so? I have some ...
2
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1answer
115 views

Forwarding with postfix: prevent rewriting of from address

When I send a mail via php mail then postfix rewrites the from address like this. For example: From: info@mydomain The from becomes: username@myhosthame How can I stop this from happening? I want ...
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1answer
712 views

fetchmail/postfix - bounce message if it is too big

I have an Ubuntu mail server that retrieves mails from ISP by fetchmail and delivers it through amavis and postfix. Postfix has a size limit of about 20MB. Mails larger than this are removed from ...
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1answer
178 views

Postfix Autorespond - “recipient address rejected”

I have an issue with postfix. If I set up an autorepsonder (I use a postgresql db, so I insert mailbox#mydomain@autoreply.mydomain.net into alias table; of course this domain is listed into postfix's ...
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237 views

Configure Ubuntu Server VPS to send mail without going to spam

I have installed and configured Postfix on a VPS. I have managed to get it so I can send and receive mail. However every time I send mail from It, it get's marked as spam and was wondering how I ...
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118 views

OpenDKIM Signing return fail when spaces in mail

Few days ago I install OpenDKIM Signing using on my CentOs 6 server by manual - http://stevejenkins.com/blog/2011/08/installing-opendkim-rpm-via-yum-with-postfix-or-sendmail-for-rhel-centos-fedora/. ...
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1answer
90 views

Multiple config file postfix

Our mail server was configured using this tutorial: Pixelinx - Creating a Mail Server on Ubuntu (Postfix, Courier, SSL/TLS, SpamAssassin, ClamAV, Amavis) Now it can receive/send email using his ...
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1answer
2k views

How to configure Postfix so that I can authenticate via SMTP to localhost

I have a Postfix MTA configured to which I can perfectly log in from remote via SMTP (Thunderbird, Python, etc.) but when trying to use the same script with the same credentials while locally on the ...
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230 views

Why does postfix take so long time to receive emails from gmail?

How can I manually check for an email from the command line? How can I force postfix to receive/update emails? The email from gmail takes 8 minutes till it will be received by postfix. How can I ...