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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0
votes
1answer
215 views

How can I disable local mail delivery in Centos? [closed]

I want to disable local mail on my Centos VPS because the I have a web form (on a website which is hosted by the VPS) which is delivering mail to the local mailbox rather than looking at MX records to ...
0
votes
1answer
88 views

Postfix reply to emails addressed to external email while keeping the correct from address

I have a mail server all set up and running on ubuntu 14.04 with Postfix / Dovecot for the domain "postfixserver.com". A second domain "googleapps.com" is running on google apps. user@googleapps.com ...
0
votes
1answer
2k views

Postfix - Mail system is down

My Postfix mail log keeps giving me this error; Oct 4 10:32:50 postfix/master[9760]: daemon started -- version 2.9.6, configuration /etc/postfix Oct 4 10:32:54 postfix/postqueue[9885]: warning: ...
0
votes
1answer
416 views

Why don't mails show up in the recipient's mailspool?

I have postfix dovecot running with local email system on thunderbird. I have two users on by ubuntu, mailuser 1 and mailuser 2 whom i added to thunderbird. Everything went fine, except the users dont ...
0
votes
3answers
14k views

Postfix: “Connection timed out” on all outbound email

I've been attempting to setup mailing lists with GNU Mailman but it's been a complete disaster with tons of road blocks. Postfix is able to receive email but not send it back out at all, I've peeked ...
0
votes
1answer
311 views

Scrub header for internal servers in Postfix?

We have all internal Centos servers sending mail to 2 outgoing MX servers in our business. I want to scrub the headers on our 2 outgoing MX servers to remove the information from where they ...
0
votes
1answer
1k views

Postfix: Possible to overwrite Return-Path via SMTP

I tried sending mails via SMTP and provied a Return-Path. Postfix seems to override my values with the "From"-Header. When im sending Mails via PHP, I am able to set the Return-Path Header with the ...
0
votes
3answers
131 views

How to test and actually perform a transfer of an internet domain to a new server regarding mail?

My setup is a productive server (e.g. 1.1.1.1) hosting a domain, lets say example.com. Currently, postfix and courier (only IMAP) are doing the job of hosting mail. I am planning to transfer the ...
0
votes
3answers
2k views

Migrating users and mailboxes from postfix / Maildir to Postfix with Mysql backend

So I've got 60 or so users on a hand rolled postfix installation on openbsd and I'd like to move their mailboxes to our new mail server running iRedMail (postfix, vmail/mysql back end) Does anyone ...
0
votes
1answer
968 views

Postfix: combine check_client_access and check_sender_access for Relayaccess

We have a mailserver running on Postfix. Only authenticated users are allowed to send emails. One client has a multifunction printer, which is configured to send scanned documents to an email ...
0
votes
1answer
211 views

Enabling per-virtualhost email relaying through external user/pass smtp relay [duplicate]

Possible Duplicate: Postfix configuration: different outgoing hosts based on sender I've got a problem that's driving me mad. Basically, I run 10 virtualhosts in a CentOS distribution. ...
0
votes
1answer
5k views

How to close an open relay in Postfix?

I've discovered my server has been an open relay. I asked about it and tried all the answers in My Postfix has gone wild. Am I hacked? but still its acting up. Every time I run #postsuper -d ALL I get ...
0
votes
1answer
424 views

Postfix null client configuration for Multiple Domains

I'm setting up Postfix null clients on in a virtual hosting server for multiple domains. I found some documentation about setting up Virtual Domain Hosting, the closest thing I could find to what I'm ...
0
votes
2answers
2k views

What does it mean to setup Postfix as “SMTP only”?

I am trying to setup Postfix a few different domains on a virtual host. I need to have email setup just to send out registration confirmations and new password requests. No one will have a mailbox on ...
0
votes
3answers
2k views

Postfix: relay access denied

I never got my SMTP service working, now i'm ready to try again. The server is a FreeBSD 8.1-RELEASE-p1, postfix was installed as part of the Webmin/Virtualmin install.sh I have read Postfix Virtual ...
0
votes
4answers
878 views

Postfix virtualised myhostname

So I have several servers all set up to send and receive mails from multiple domains, this all works perfectly fine. However a few people have complained that within the mail headers you still see ...
0
votes
2answers
446 views

Adding spam addresses to SpamHaus and SpamCop DNSRBL

I have a Postfix e-mail receiving server setup. I have applied the following setting in my Postfix main.cf file: smtpd_recipient_restrictions = reject_unauth_destination, reject_rbl_client ...
-1
votes
2answers
404 views

Fedora Email Forwarding (Postfix)

I would like to forward all email sent to non-existant users on my fedora server to my gmail account. Is there a simple way to do this? How would I forward all email?
-4
votes
2answers
436 views

Postfix SMTP server issue

So I have an Ubuntu Linux box machine for my website. (not ran locally at home, it is a public linux box). But for some strange reason I can only send Email from my home machine to this box in ...
6
votes
6answers
3k views

Spam prevention tips for Postfix [duplicate]

Without using SpamAssasin, or similar, what are your best tips for preventing spam. Please try and provide config examples :D
10
votes
13answers
7k views

Postfix performance

Running postfix on ubuntu, sending alot of mail ( ~ 1 million messages ) per day. loads are extremly high but not much in terms of cpu and memory load. Anyone in a similiar situation and know how to ...
20
votes
2answers
6k views

Automate the installation of postfix on Ubuntu

My system configuration script does an "apt-get install -y postfix". Unfortunately the script is halted when the postfix installer displays a configuration screen. Is there a method to force postfix ...
12
votes
2answers
10k views

How to redirect all postfix emails to one external email address?

To create a test email server, I have a similar requirement as: http://serverfault.com/questions/94640/how-to-redirect-all-outgoing-email-from-postfix-to-a-single-address-for-testing But I need to ...
6
votes
3answers
4k views

My Postfix has gone wild, is it compromised

Today, I found my server couldn't work because it was filled. I checked the logs and they had grown enormously, I deleted them so as things could work. now with current logs I'm seeing a lot of ...
9
votes
1answer
4k views

Postfix TLS over SMTP - RCPT TO prompts renegotiation then 554 5.5.1 Error: no valid recipients

I've setup ispconfig3 on my debian six server, and here is a little smtp over ssl: The server is postfix AUTH PLAIN (LOL!) 235 2.7.0 Authentication successful MAIL FROM: lol@lol.com 250 2.1.0 Ok ...
7
votes
5answers
5k views

Is there any alternative to SpamAssassin? [closed]

I'm looking for an alternative to Spamassassin. Anyone tried rspamd ?
6
votes
5answers
2k views

Getting stats about deliverability from postfix

At work, our CEO is working on a plan to move away from a service provider who do our Spam filtering, etc. Currently, all our mail gets relayed out through this service, and all incoming email gets ...
5
votes
3answers
1k views

Setting up a postfix email server

When I set up an email server using postfix on ubuntu server, how do I make sure that it won't be an open relay??
4
votes
3answers
2k views

Postfix 'load balance' sending IPs

I got a server with 8 IP addresses to use as a mail server (With PostFix). I want PostFix to rotate the IP and hostname for each message. I found the config parameter smtp_bind_address = 1.2.3.4 ...
9
votes
1answer
5k views

How can I configure Postfix to ignore relayhost for some domains?

Is there a way in Postfix to ignore the relayhost? I have something like relayhost = [smtp.domain.net]:587 Now for a certain domain I don't want to send it out to that relay but want it to just ...
8
votes
1answer
9k views

Can postfix be set up to forward mail to multiple recipients

I have the following postfix virtual file: test@domain.com bob@me.com This correctly forwards all emails to test@domain.com to bob@me.com However I would like to forward these emails to ...
7
votes
2answers
6k views

How to redirect all mail from one domain to another in Postfix?

I have two forms of the same domain name, one being a common misspelling of the other, let's say tedswidgets.com and tedswigets.com. I'd like to redirect all mail for <someone>@tedswigets.com to ...
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 ...
6
votes
1answer
1k 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 ...
5
votes
3answers
11k views

How do I temporarily suspend mail delivery to a specific domain (non-local) with Postfix?

Using Postfix and custom transports I can manage delivery speeds depending on the recipient's domain. (For example, I send max one message per second to *@hotmail.com) I also use similar rules to ...
3
votes
2answers
3k views

How can I route some emails to a script in Postfix?

How do I route all emails directed to user-*@example.com (i.e. user-1234@example.com) to a pipe command in Postfix? The idea is to create craigslist-style anonymization by assigning dynamic email ...
3
votes
2answers
5k views

Processing incoming emails with Python

I'm developing a web application that requires that a registered username be able to receive emails to: <some-username>@<my-web-app>.com I need a way to be able to process the email ...
3
votes
4answers
2k views

postfix mail server setup for 8000 users using active directory [closed]

i wanna to setup postfix mail server instead of ms exchange server . we have around 8000 users , and we want to use active directory for users . how many servers do we need ? what kind of strategy we ...
14
votes
6answers
978 views

How do you monitor a monitoring server?

So we run Groundworks (with Nagios) on CentOS to monitor our various servers and processes. I have it setup to automatically send emails and SMS texts when things reach a WARNING or CRITICAL state. ...
9
votes
3answers
15k views

Change default from address from Postfix from www-data to something else

Setting up Postfix and Apache/PHP on an Ubuntu server. Mail's now going out ok with the proper domain name, but the local part display name is always "www-data" as I'm assuming Postfix uses the name ...
5
votes
2answers
3k views

Can't get SASL auxprop/sasldb working with postfix/Ubuntu 12.04

I have an Ubuntu 8.04LTS system running Postfix 2.5.1. On that system SMTP AUTH runs fine. The contents of /etc/postfix/sasl/smtpd.conf are: pwcheck_method: auxprop auxprop_plugin: sasldb mech_list: ...
5
votes
1answer
1k views

How can I “filter” postfix-generated bounce messages?

We are using postfix 2.7 and custom SMTPD (based on qpsmtpd) in highly customized configuration for spam filtering. We have a new requirement to filter postfix-generated bounces through our custom ...
5
votes
2answers
7k views

How to setup a Postfix SMTP-only for multiple domains

This is my first question on Stacks. I always read a lot of solutions to problems here almost every other day. So thank you to all contributors. I am a noob here so please spare some space if I am ...
5
votes
1answer
953 views

Hybrid gmail MX + postfix for local accounts

Here's the setup: We have a domain, mydomain.com. Everything is on our own server, except general email accounts which are through gmail. Currently gmail is set as the MX record. The server also ...
4
votes
1answer
872 views

postfix multiple IP SMTP banner

I've installed postfix 2.11.3 and we have multiple IP addresses on our server which we want to host two domains, isolated and running on their own IPs. domain1 unix - - n - - ...
4
votes
1answer
82 views

How do i know what postfix is compiled with?

I inherited a version of postfix and it is running fine. I would like to use mysql for my virtual tables and aliases. My question is : how do i find out what Postfix was compiled with?
3
votes
3answers
3k views

Dovecot Migration and old mails

I'm migrating my mails from an old server to a new one, the configuration is good (mysql virtual accounts & imap only), with dovecot and postfix. It's already running for other users, I just want ...
2
votes
1answer
752 views

Postfix smtps and submission confusion

I've setup postfix so that email clients use port 465 (smtps) for outbound mail. I'm not really understanding the difference between smtps (port 465) and submission (port 587) What's the 'best ...
2
votes
2answers
5k views

Postfix/Dovecot permissions on new files in a mailbox

According to this article: When creating new files inside a mailbox, Dovecot copies the read/write permissions from the mailbox's directory. I'm not seeing this. Here is what I'm seeing: ...
2
votes
1answer
4k views

Block outgoing mail to specific address using Postfix

How could I block outgoing mail to a specific address using Postfix? I've partially managed to block outgoing e-mail using header_checks. However, header_checks doesn’t cover BCC. I also tested ...