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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.

6398 questions
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Postfix can not send to some mailservers: 'not logged in'

I have setup a Postfix stack (with Dovecot and Spamassassin, ClamAV + Amavis) which is working pretty good, actually. It relays my emails (I am using Thunderbrid as client) to other mailservers. I tried different ones like gmx or gmail. I have an…
user207564
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what is the best antivirus and antispam addon tools for postfix?

Can you guys share some thoughts/experiences for antivirus/antispam for postfix. What is your antivirus and antispam combination used in your system? any particular reasons behind it? notable features that should be considered when choosing…
Abi Aqil
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PostFix Relay Access Denied - not obvious why

I have read A LOT of places of people trying to solve this problem and none of them have worked for me. I have the following script import smtplib from email.mime.multipart import MIMEMultipart from email.mime.text import MIMEText msg =…
ajon
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Getting error 421 4.3.2 All server ports are busy

I am running postfix on debian wheezy with Dovecot and I had spam issues with a php script . after finding and removing the script I am unable to send any mails from squirrel mail from my browser. I get ERROR: Message not sent. Server…
user3067037
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Postfix Stagger/Rate Limit Outbound Mail

We have a server that sends our weekly newsletter to subscribers, To prevent people like Hotmail or Yahoo from blocking us due to sending too many simultaneous emails to them, Is there a way we can stagger email, or rate-limit outbound emails from…
grufftech
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Postfix thinks IP is in blacklist, but is not actually listed in blacklist

Got a bit of a weird problem here with Postfix. Been getting a whole bunch of notices where fail2ban has banned 69.164.196.21 (ryujin.darkdna.net) for failures against Postfix. Here is a relevant snippet from Postfix's log: Jan 13 17:56:26…
postfixgonepostalithink
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Setting up restriction classes in postfix for blocking receiving and sending mail to external domains.

Hello everyone on serverfault, I run a Debian Wheezy mailserver with postfix and several domains on it. For one domain, I need some accounts to be unable to receive and send email to the external world, only to the same domain. The other accounts…
gtbono
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SASL accepts "wrong" passwords

I setup an mailserver with Postfix and configured it to use Cyrus SASL to authenticate my users. It worked perfectly, until I found out that I can login with shorter passwords than they actually are. For example the Password should be uhuh1234h22 i…
Matthias Dunkel
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Postfix not recieving mail from actual email but does from sendmail?

Ok so I'm trying to forward mail from my ubuntu server (lets call it example.com) to a external gmail account using postfix. The problem is when I send mail using another gmail and yahoo account to monkey@example.com, and I check var/log/mail.info,…
bnynn
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RoundCube login to local IMAP server failing

I've been following this guide to set up a mail server on my server: http://flurdy.com/docs/postfix/edition5.html The only difference is that this tutorial uses a MySQL database and I've used PostgreSQL. But I can't login to RoundCube. This is a…
morgoth84
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opendkim incoming not verified

I've installed opendkim with postfix on Debian Wheezy. Outgoing mail is getting DKIM signatures. The smtpd and non-smtpd milter spec is the same. Incoming mail seems not to be verified - in a mail client there is no Authentication-Results…
user203826
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How to override an MX value for a particular domain using a transport_maps but have some form of redundancy

I have a postfix mail server and I want to override an MX value for a particular domain. From my understanding this is can be done by the use of transport_maps http://www.postfix.org/postconf.5.html#transport_maps You add a line to…
John
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Postfix doesn't require authentication for local emails?

I've got a Postfix/Courier mail server (Authenticated with SASL/MySQL) all according to this tutorial. I'm currently running my server on Debian 6, it is a VPS. It works well as far as I can see but I can't seem to require authentication for inbound…
Pinpickle
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How to use usernames instead of e-mail addresses for Dovecot login?

I have a mail server set up on a Debian 7.2 machine running Dovecot 2.1.7 and Postfix 2.9.6. I have both Dovecot and Postfix set up to load virtual users from a database populated by Postfixadmin. Currently the mailboxes are stored at…
DanielGibbs
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Postfix relay access denied when sending from external mail client

I know this has been asked before, but I tried the other andswers and still get the same error. Server error: '554 5.7.1: Relay access denied' postconf -n: alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases command_directory =…
Frank Astin
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