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Questions tagged [postfix-mta]

QUESTIONS ABOUT POSTFIX ADMINISTRATION ARE OFF-TOPIC. Server admin questions may be asked on Server Fault. Postfix is a free, open-source, widely used cross-platform mail server (mail transfer agent), available on all common platforms.

The postfix-mta tag can be used for programming questions related to the Postfix mail transfer agent. Non-programming questions relating to setting up a mail server are off-topic for Stack Overflow. Such questions are often on-topic on Server Fault.

Postfix is a popular mail transfer agent (MTA), created as an alternative to Sendmail by Wietse Venema. Postfix is intended to be similar enough to Sendmail to be comfortable for those already familiar with Sendmail. However, Postfix is specifically intended to be fast, easy to administer, and secure, and will deviate from Sendmail convention when necessary to achieve those goals.

Postfix is free and open source, and offers a source distribution that is capable of running on a wide range of Unix-like systems, including Linux, Solaris, FreeBSD, AIX, HP-UX, and Mac OS X. Some system vendors also provide pre-built binaries for ready-to-run use.

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Postfix configuration

The application is running in Docker container. I do not have this problem when running in a clean VM. 2016-10-18 21:26:14,495[nio-8080-exec-4] [INFO ] [com.xxx.mail.MailSender 102] - Sending from noreply@172.17.0.1 to xxx@gmail.com with…
bianchi
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POSTFIX - limit send and receive done by user in time interval

I am trying to limit the number of send/receive attempt done by my user to postfix server in time unit. Eg, i want the postfix to process each user's connection once in 60s. As currently, my user keep clicking on the send/receive button in their…
Joseph Goh
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PHPMailer can't send via postfix

I already setup postfix in my debian linux VPS. I can send email via ssh console using postfix. I can send email using PHPMailer using my gmail account. I can receive email in my debian linux VPS account. Then I want to send email using PHPMailer…
Plugie
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undelivered mail several days later

this is my first time in this group, I have just joined to it. Please, be patient if I make any mistake, I am learning English right now. My problem is I have an email server for internal use only. It is Postfix. When someone tries to send an…
Sistemas Saitec
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Sending email using python through postfix

When I send emails through postfix, headers always contain one extra hop that I would like to get rid of. Here are the headers: From admin@mta.emailcab.com Sat Aug 20 18:40:58 2016 Return-Path: X-Original-To:…
offline15
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Postfix mail.log filled with Azure server attempting to connect - how to stop?

I've only recently been made aware that Azure has now blocked VM's from sending email directly to other email servers (which has been working fine up until the last month), and am currently attempting to switch over to a relay through Office 365 as…
Craig McCormack
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How to apply anvil ratelimit on postfix mynetworks host?

We are using Postfix MTA as smarthost relay for our application servers. We are maintaining the access through "Mynetworks". We have list of IP addresses which are map to "Mynetworks". Now days we are facing the issue of spamming / mass mailing…
Vendhala
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global procmailrc and sendmail execution rights

I am setting up procmail on my Debian Jessie mail server with the following global procmail config file…
duxsco
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Postfix send only server setup returns nothing

I am attempting to create a mail server on my linux machine to act as a send only email server, eventually to be integrated with PHP on my web server. Unfortunutely, I have been unsuccessful no matter what mail server I use. Right now, i'm working…
Sid
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Postfix limit queue size

Sometimes my RPI drops internet connection and cron jobs starts failing left and right and the queue grows incredibly fast, and once I reconnect it just floods me with email. I'd like to limit the mail queue to a fixed number, is this possible?
William Boman
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Can't receive e-mail from external server

I'm trying to make my email server. I used this tutorial.       - I can send message (Yeah !)       - They are chffred by SSL (Yeah ) But ... I can't receive email from Google by exemple. If I send me a mail theses mails :       - frank@mymail.fr…
Antoine Duval
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Postfix stopped working: connection refused

I have been using postfix on an ec2 ubuntu instance to send out emails to all of our clients. All has worked fine until today, when i tried to send out 50 emails. None of them got sent, and when checking the queue all of them have 'delivery…
user3024827
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Trying to add an after-queue mail filter in Postfix on CentOS, get execvp permission denied

So I followed [the guide][1] on how to set up a simple mail filter with Postfix, so that I can do a find-replace in the body of outgoing emails. I created a script at /tmp/mailfilter.sh, and changed the /etc/postfix/master.cf file as instructed #…
Sossisos
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Postfix sending mail from hostname

heey all, I'm having a question regarding postfix and how it sends mail. I've set up correctly and i'm able to send mail which doesn't end up in spam. But for some reason when i show details of the mail (on gmail for example) it shows this a sender…
Baklap4
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Postfix for BCC send emails?

I was wondering if its possible to forward all the sent emails using Postfix Forwarder package or is there another package that can do that? I would like to use postfix forwarder on pfSense which already has the package version 2.4.6 Currently the…
killmasta93
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