Postfix is Wietse Venema's mail server that started life at IBM research as an alternative to the widely-used Sendmail program.

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7 views

Stopping postfix - are messages queued when postfix is idle?

I am running some scans on my server tonight and would like to disable email notifications since there is a chance for a LOT of them to be sent out. I am planning to issue service postfix stop ...
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12 views

How mail works? What are the files it refers to send a mail from a mail client to get acknowledgement from mail server? [on hold]

Logically how mail works? from source to destinations how many files, stages it referes. How mail works? What are the files it refers to send a mail from a mail client to get acknowledgement from mail ...
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26 views

Postfix, Send specific Emails to an alternative external SMTP server? [on hold]

First of all, I apologize about my inexperience on this but I will try to explain my problem the best way I can. We have an email server(CentOS 5/Postfix 2.3.3) that fetches the emails from the ...
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2answers
25 views

Redirect specific e-mail address sent to a user, to other email-recipients

I'd like to know if it is possible to configure postfix to redirect to many email addresses (including the original recipient) instead of only one? Here is my scenario: When an e-mail is: Sent from: ...
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1answer
29 views

How to configure sendmail.postfix to relay on exchange 2010?

I'm currently trying to figure out how to configure sendmail.postfix in Red Hat 6 to work with exchange 2010 relay. I've already configured our exchange server to allow our web server to relay. What ...
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12 views

Dovecot/Postfix and mail vmail directory

I've setup a Postfix/Dovecot mail server. I'm using Postfixadmin to set up a SQL users database. My question is If I ever migrate to another server and I don't have the /var/vmail directory ...
3
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1answer
58 views

Disable postfix HELO checks completely

I'm trying to set up a mail relay for a cranky old voicemail system. I set up postfix on a vm, enabled relaying, verified that I can telnet to port 25 from the same subnet and send mail wherever I ...
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1answer
18 views

Postfix or mutt changes subject string

I suspect that when I send a message to my postfix server with Re: in the beginning of the subject I get the following view in mutt: The first message containg Re: looks fine. But if I resend ...
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48 views

How to configure postfix to send mail to external SMTP server?

I have a machine with http://phabricator.org/ set up on it and I would like to set up postfix to enable e-mail sending to my company's mailboxes (as for notification emails coming from e.g. ...
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10 views

Can Postfix inbound TLS (smtpd) use a policy map to not enforce TLS for some hosts?

I have a Postfix server running submission on port 587 with mandatory TLS and SASL authentication. I want to allow clients on localhost to connect without using TLS and without authenticating. By ...
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1answer
77 views

Must issue a STARTTLS command first, even with it in main.cf

This is my first time setting up a linux server and I can't seem to get the email to work. Anytime I try to telnet and do the "mail from" command I get "540 5.7.0 Must issue a STARTTLS command first" ...
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1answer
28 views

How to restrict helo to match the client's ip/domain

Postfix has some nice options to restrict client accesses with respect to DNS/IP address setup and helo names (documentation). For example one can instruct postfix to reject clients if the helo ...
2
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1answer
36 views

Why doesn't Postfix reject a specific client's connection attempts?

My SMTP server is being probed. It looks like a brute force attach on SASL, where they're going through a password dictionary. Having seen thousands of these lines in the log files Sep 18 14:09:52 ...
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0answers
24 views

.forward file username and folder separator

I found (I'm learning how e-mail works) a .forward file in a user home folder; emails should be forwarded to mailboxes of other users. Email addresses are written in user+folder addressing notation, ...
1
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1answer
33 views

Altermime and SELINUX

I've setup an application called altermime (http://www.pldaniels.com/altermime/) for postfix (SMTP server) which alters emails midstream. I'm injecting a "X-ListUnsubscribe" header into every email ...
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0answers
10 views

Postfix favors non virtual to virtual host

I have a linux user thomas and 2 domain names domain1.com and domain2.com. I have followed steps to have two virtual mail boxes /var/mail/vhosts/domain[12].com/ When I test and send an email to ...
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0answers
50 views

Postfix unable to send mail from mydomain only

My domain DNS is served by the domain registrar. I am able to send mail successfully from any address with postfix but not from mydomain.com From this machine - I only want to be able to send mail. ...
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0answers
43 views

Postfix configuration? problem

I try to configure mail server on my VPS. I try this tutorial but unfortunately I cant run it. My configuration files are exact the same I only replaced mydomain.com with my own domain. Also when I ...
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1answer
68 views

Allowing outgoing emails that will be delivered to localhost only

I operate a Linux system where I give out free Linux shell accounts to people for educational purposes. Unfortunately, while doing so it's expected to meet abusive users who will keep sending spam ...
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1answer
203 views

Postfix vs Google SMTP servers inconsistency

I wanted to host my own mail server and in order to do so I've installed Postfix 2.7.0 and Dovecot 1.2.9 on Ubuntu Server 10.04. I had fun reading the docs and configuring all these great tools, I am ...
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1answer
485 views

Upgraded to Ubuntu 14.04 - Mail server missing dovecot-lmtp even though it is installed

So I upgraded to Ubuntu 14.04.1 from 12.04 the other day. Easy upgrade process. Everything worked fine except for my mail server stopped receiving mail. The logs show the mail arrives and is ...
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262 views

virtualbox mail server postfix+dovecot

I'm setting up a mail server(ubuntu14.4 serverX64) for development/testing purposes (using virtualBox bridged-mode) and I just finished this tutorial and everything seams to work. Now I'm not able ...
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0answers
331 views

How do I install postfix with MariaDB 10.1? …Or mailserver…?

I'm using CentOS 7 x64. Log: There isn't mariadb-libs for 10.1, not that I'm aware of. There is MariaDB-compat which as I found out seems to provide the same functionality and I have it installed, but ...
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1answer
293 views

Postfix is sending and receiving mail locally, but not to external mailbox

I have a CentOS box running my Apache website and Postfix, but whenever I try PHP's mail() function to my @aevidi email, it sends to my local mailbox in ~/mail, but is not visible in Zoho's webmail. ...
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26 views

How to receive emails on CentOS 5 server?

I've installed postfix with this nice tutorial http://wiki.centos.org/HowTos/postfix and postfix and dovecot are up and running. I set up user maildir as tutorial suggested. Now I can check my ...
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1answer
33 views

sending emails with heirloom, even when Postfix is not running locally

Normally, I can send email from commandline, such as echo hello | mail -s "subject" user@example.com I have noticed that even when Postfix is not running on my machine, I can still "send" emails. ...
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1answer
168 views

accessing Maildir locally with Mutt and remotely over IMAP simultaneously

I have Postfix + Maildir + Dovecot + IMAP on my mailserver. I am accessing my mailbox remotely over IMAP with one or more clients (Thunderbird). Additionally, on the server I have mutt configured for ...
7
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1answer
230 views

Multiple instances of Postfix throwing error fatal: unknown service: smtp/tcp

I am trying to configure multiple postfix-2.12 instances on FreeBSD 10.0-RELEASE following the README. postmulti -e init postmulti -I postfix-out -G mta -e create ... This all works I can start and ...
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1answer
482 views

Mail filtering with procmail in a postfix/dovecot system with virtual users

I had a postfix/dovecot system with mail users working. After unsuccessfully following a few tutorials online to enable procmail, now I have an unusable system. What I want is to enable procmail ...
4
votes
1answer
56 views

multiple clients accessing one email account over IMAP

I am using Postfix + Dovecot + IMAP + Maildir and I am accessing my server from two different machines (desktop and Laptop), i.e. two clients (Thunderbird). The are sometimes running simultaneously, ...
3
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1answer
583 views

Postfix: disable authentication through port 25

When using Postfix and IMAP on a mailserver, at least 3 ports are usually opened 25 smtp : incoming emails from anybody (whole internet) 465 smtps : outgoing emails from authorized users (to the ...
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259 views

Postfix error: not yet authorized to deliver mail

I am running a private postfix server for my domain mydomain.com, on server 111.111.111.111 (IP and domain sanitized for privacy reasons) I have sent an email to info@example.com which is on server ...
2
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0answers
67 views

Mails from my server goes directly to spam

I am running an ubuntu server with plesk panel, Mails sent from this server goes directly to spam folder. All records seems perfect like spf, DKIM, Domain key, PTR etc.. I'm really stuck with this. I ...
2
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1answer
26 views

change smtps port in Postfix

Is it possible in Postfix to specify a non-standard port for smtps? Normally, smtps listens on standard port 465. Standard port is good for publicly used server. But if a server is only intended for ...
3
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3answers
272 views

Dovecot ignores settings for mailboxes

I have set up Dovecot on my Postfix mailserver. My mailserver is using Maildir format: home_mailbox = Mail/inbox/ A user's Mail directory looks like this: $HOME/Mail/inbox $HOME/Mail/drafts ...
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0answers
24 views

How to force email into queue?

I'm writing an application for Linux, and it needs to interact with the mail queue. Is there any way to force a message to be deferred?
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36 views

firewall and SElinux disabled for postfix for configuration troubleshooting

Why would you disable your firewall and SElinux for postfix and not re enable after configuration? Also why would I have no conf file in SElinux folder only these restorecond.conf ...
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vote
1answer
278 views

How to make postfix create maildir?

How do you make postfix create maildir folders automatically for all users? I have these two lines in postfix main.cf, which supposed do create maildir folder after the first mail but it is not ...
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1answer
75 views

How can I determine the cause of CF card corruption?

I installed qnx in my CF card and made it bootable and it was working well. However, yesterday it stopped working while my system was running. Checking the filesystem revealed that it was corrupted. ...
2
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0answers
362 views

Impossible to send mail to microsoft (hotmail, live …)

I cannot send mail to hotmail with my postfix server. I can send and receive mail from gmail and others, but not hotmail. I made an "Authentication Report" on auth-results@verifier.port25.com: ...
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0answers
125 views

postfix expand ldap group AND afterwards resolve alias

We have a postfix server which has the user config stored in a openldap directory. Recently we also implemented ldap groups which are expanded by postfix. This works fine, unless the group expands to ...
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20 views

Exchange NDR Hybrid Setup

NDR changed within hybrid messaging solution . Hybrid of Exchange Server + open sources base Mail Server (using postfix , Cyrus IMAP , etc) unable to view "Email id Or Users ID" in Bounced ...
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1answer
3k views

Postfix email bounced (mail for domain loops back to myself)

I have problem when i send a mail to example@orbialia.es for example2@orbialia.es My emails has bounced for this error: status=bounced (mail for orbialia.es loops back to myself) May 9 09:33:58 ...
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0answers
213 views

can't receive mails to thunderbird via postfix local server

A small introduction. I have a SMTP server ( Haraka - http://haraka.github.io/ ) on port 25 and a local postfix server on port 9267. I intercepts mails in Haraka and then I send them to my postfix ...
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36 views

Postfix does not respond after “Mail From”

I have a VPS with Linux on it, and Plesk. The /proc/version file has (Red Hat 4.4.6-4) in it. The mailer is Postfix, but it isn't working, if I telnet in to port 25: I Get the banner I do HELO I ...
0
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1answer
29 views

Whitelist virtual_alias_maps

I have one mailbox in postfix and several aliases to it. Is it possible to create whitelists for specific alias in order to allow only the addresses from the list to send messages. For example: ...
0
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1answer
74 views

Manually interacting with postfix mail queue

I need to manually be able to interact (check, remove, etc) with the postfix mail queue (through scripts and what-not). I know that this generally is a bad idea; so how can I interact with the queue ...
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0answers
42 views

Deliver emails outside network, from a server behind router DNS and port forwarding

I've been trying to configure webserver to deliver emails outside the local network. Server is connected directly to the router and relay on its DNS service, and one of that online service for resolve ...
3
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1answer
335 views

simple script for monitoring a mailserver

I would like to use a simple bash script (python would be second best) to monitor regularly (hourly) if my mailserver is online and operating. I know that there are dedicated solutions for this task ...
2
votes
1answer
174 views

Postfix Relay Multiple Domains with Multiple Origins

I currently have Postfix relaying multiple hosted customer solutions which all works as expected. There are no local accounts and it is used solely as a relay server. In the config I have the ...