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Questions tagged [postfix]

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` (non-default content of main.cf) and `postconf -M` (content of master.cf)

Postfix is a mail transfer agent (MTA) that supports IPv6, DNSBL, SMTP AUTH (SASL), TLS and various database backend.

Postfix was written by Wietse Venema in 1997 and first released in December 1998 as IBM Secure Mailer.

It was designed to be highly secure and configurable, and is a drop-in replacement for , with much simpler configuration syntax.

The software was also formerly known as VMailer.

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Dovecot configuration error (Permission denied) - Email for root

I have setup a local user called postman and logged into it using Thunderbird (IMAP). Following is being shown in the mail error log. Dec 14 23:45:18 ams1 dovecot: lda(root): Fatal: Invalid user settings. Refer to server log for more…
user176306
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How to get different Received: from headers from each domain using Postfix Virtual Domain Hosting?

We have try to configure Postfix for multiple domain with dedicated IPS. When I am sending mail from different domain webmail then header show same local or main domain name. For all domains: Received: from control.yourdomain.com (ns1.domain.com.…
user202536
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"Masquerade" mail sender on a multi-domain shared hosting

I've a single host with CentOS 6.3. I manage that host via SSH. The server itself is uname -n: servername.foo.com. On this host I've multiple, unrelated httpd vhosts. The problm is: when one vhost sends a mail with PHP mail(), the sent mail header…
Dr. Gianluigi Zane Zanettini
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HAproxy for postfix

I want to setup HA postfix mail servers with 2 postfix instances. I have two postfix servers and I configured two postfix instances on these servers. Now I want to know how to configure HAproxy loadbalancer for the backend postfix servers. Can…
BioLounge
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Mail Service requires reboot every few days

I'm kind of new to postfix so am hoping someone can point me up the obvious here I have a Postfix working as SMTP server and everything is fine for a few days. Then without warning or apparent reason i can't send mail anymore. Checking the mail.log…
537mfb
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Debian - Postfix + Dovecot, send but not receive mail

I have followed the instructions in this tutorial. I can successfully sent emails but i cannot receive. Here is exactly what happens: When i sent an email from my hotmail account if i do # ls…
Christos Baziotis
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Postfix, MSA, Smarthost, and LAN

I've, let's say, 5 servers. They are either public and private or only private (network), they all send e-mails, either system e-mails (local mailbox) or installed application (wiki, issues tracker, etc.). And I've a 6th which I want to use as…
Trent
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Postfix not accepting relay from localhost

Postfix does not seem to want to accept relay from the local machine, despite mynetworks_style=host. Here's (trimmed) mail.log output when debug_peer_list enabled: postfix/smtpd[23247]: resolve_clnt: `' -> `someone@externaldomain.com' ->…
Erwin Wessels
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Move Maildir safely on running server

I want to move some Mailbox directories to a new disk while postfix and courier imap daemons are still running. The question is ¿what happens if a new mail is recieved into the Mailbox while moving the files? ¿is it safe? Thanks!
siete
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postfix opendkim DKIM-Signature and Domainkey-Signature

Running postfix on CentOS 6 as an edge relay for a while now, so all our outgoing mail is routed through one point with opendkim signing the mail. This works great. I was originally using dkim-filter/dkim-milter (I believe) but switched to opendkim…
batfastad
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Howto enable SMPTS (465) postfix CentOS

I need help is enabling SMTPS. I use postfix , dovecot with MySQL(virtual domains). I do not know how to enable SMTPS(465). I already added tls related settings and key and certificate in the "/etc/postfix/main.cf" OS: Centos 6.4 64 bit Please my…
Abdul
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How to get feedback from SMTP server, connecting to it from another server in the same network?

I have the following scenario: [HTTP Server]: process messages [SMTP Server]: only send messages [HTTP Server] === connect to ===>>> [SMTP Server] === sends message ===>>> [world] Ok, this is going well. My point is: how to get feedback from [SMTP…
Sergio Mira
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postfix Temporary lookup failure NOQUEUE: reject

I get an error and don't know how to fix it. Sending is working alright. This is my /var/log/mail.log: Oct 26 17:15:23 pikachu postfix/smtpd[16360]: connect from mail-ee0-f51.google.com[74.125.83.51] Oct 26 17:15:24 pikachu…
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Installing and maintaining an email server

I need to move hosting providers for four or five domains and for several reasons I'm considering a Linux VPS rather than staying with my current shared, managed hosting provider. The only thing that's stopping me is email. I have lots of experience…
Andrew
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running localhost mta vs. php smtp'ing via 3rd party api

so the question is, would it be "better" to run localhost mta (ie. postfix) or "better" to use 3rd party restful api, embedded in the application, to send email? i am curious what people would do here. i find postfix on linux allows much greater…
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