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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1answer
3k views

postfix/smtpd: warning: connect to Milter service unix:/var/run/opendkim/opendkim.sock: No such file or directory

I have problem with postfix on debian after upgrading from squeeze to wheezy. Postfix was configured to sign messages using dkim-filter. Before update, everything was working flawlessly, now it fails ...
1
vote
1answer
34 views

See which file using postfix

I have a - what I think Malware - problem on my site. Using my server to send spam mail. When running top and SHIFT+M I get the following: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ ...
1
vote
1answer
218 views

Postfix uses the interface alias instead of the primary interface

When sending e-mail with /usr/sbin/sendmail (e.g., using a script), Postfix causes the mail to be sent using one of the host's interface aliases (eth0:0, 74.50.122.55) instead of using the primary ...
0
votes
1answer
170 views

Postfix header_checks

I want to forward a copy of the users email which has the specific subject. I have tried the below settings, able to Redirect that particular subject mail. But I want to forward a copy of that mail to ...
1
vote
1answer
334 views

Is there a way to store mail attachments outside of mailboxes?

Nowadays, size limits on mail attachments are less comprehensible by traditional users. I am looking for a way to extract mail attachments as simple files that I would be able to manage elsewhere. On ...
2
votes
1answer
852 views

How to handle bounce mail sent to the VERP address

We have our postfix configured to handle mail for our websites. For every website we have configured a bounce handling user with local_recipient_maps = hash:/etc/postfix/recipient_maps The file ...
2
votes
1answer
1k views

Linux: Use maildir instead of mbox

Is there a way to use Maildir instead of mbox on a Linux box? On some websites, it is suggested to add to /etc/aliases: myuser: /var/mail/myuser/maildir I've issued the newaliases command, but it ...
2
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1answer
161 views

Port 110 visible to the outside world - necessary or a bad idea?

I just did [a test][1] that told me my gateway's (debian squeeze) port 110 is visible from outside. It's a box with two network cards, eth0 is for my internal network (192.168.1.0/24) and eth1 goes ...
3
votes
1answer
5k views

Postfix error: Relay access denied

I can't send mail to external email addresses such as gmail. When I try to send a mail with telnet I get the following error: Trying 130.xx.xx.128... Connected to mydomain.com. Escape character is ...
1
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1answer
96 views

When I set up an email server using Postfix, how do I configure it to use my domain name?

I decided to follow this guide, but they only make a passing mention of using a custom domain name: Insert the following details when asked (replacing server1.example.com with your domain name ...
2
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1answer
2k views

Email Sent via root@domain.com despite modifying /etc/aliases

First, here are the entries I added/modified in /etc/postfix/main.cf file: mydomain = domain.com myorigin = $mydomain relayhost = email-smtp.us-east-1.amazonaws.com:25 smtp_sasl_auth_enable = yes ...
4
votes
2answers
7k views

“IPv6 support is disabled” warnings

I get the error while running a script which tries to send emails. send-mail: warning: inet_protocols: IPv6 support is disabled: Address family not supported by protocol send-mail: warning: ...
2
votes
2answers
363 views

fetch data from Incoming mail in postfix

I have configured postfix for my kk.com domain successfully. Now I want to add function as described in the following example: If someone mails me at admin@kk.com, one php script will fetch ...
3
votes
2answers
453 views

Use /etc/aliases for outgoing mail relayed by postfix with local domain

I'm using Ubuntu 12.04 with postfix configured as satellite system that relays outgoing mail to Gmail. For sake of example, my registered domain is example.com I want root cronjobs' error output to be ...
2
votes
1answer
334 views

Trouble with postfix install (timing out from client) [closed]

I have just outfitted a basic server (Ubuntu 12.04 LTS /Precise Pangolin) and have installed Postfix and Dovecot, based on the Ubuntu manuals. https://help.ubuntu.com/community/Dovecot ...
2
votes
1answer
2k views

How to discard mails sent from a specific local user to external addresses?

How can I configure Postfix to silently drop / discard mails that were sent from one of my users to an external address? I'm already able to discard all mails to external addresses using the ...
1
vote
1answer
816 views

Sender based redirection on Postfix

I'm running postfix on Debian, receiving email for my.com, and I would like all incoming emails from sender.com to be delivered to jack@my.com, regardless of the original recipient. Emails from other ...
0
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1answer
409 views

postconf -e postfix_mydestination = localhost blah.deblah.com.au

Above is example of command someone used to successfully direct to subdomain but when I try it I get postconf: fatal: missing '=' after attribute name which makes no sense to me when clearly the equal ...
0
votes
1answer
512 views

how to solve postfix errors?

After following several tutorials on setting up postfix at basic level on CentOs for my VPS, continue to get the following: -bash-4.1# postfix start /usr/libexec/postfix/postfix-script: line 317: ...
1
vote
1answer
4k views

Which name should be used for myhostname in Postfix's main.cf?

For #myhostname, I should uncomment and put my hostname, i.e. the name I gave my VPS, right? Or does it just go myhostname = mydomain.net, in other words don't edit the phrase 'myhostname' except to ...
2
votes
1answer
331 views

CNAME: Mail address gets rewritten

I have a problem with receiving mails. I do not know if my server or the server of the sender is wrong configured. I have a domain daniel-marschall.de which has following DNS RR: ...
1
vote
1answer
691 views

Error when restarting Postfix

I have recently purchased an SMTP server for my web app (I need to send account confirmation emails to my users and I don't want them to go into the SPAM folder, I will also be using it for email ...
1
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1answer
320 views

How can I configure postfix smtp per user?

I have previously used msmtp as my MDA. msmtp has a configuration file with username and password of the outgoing smtp server (eg gmail) stored in my home directory. I've recently changed ...
0
votes
1answer
277 views

Force users to change email password every six months

I'm going to build an experimental mail server with Postfix + Dovecot and Mysql for user accounts. The server will offer SMTP + POP3 + IMAP. Is there a way to force users to change their mail account ...
2
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0answers
170 views

why is FQDN using external IP address

When postfix connects to the FQDN dur.bounceme.net it uses the external IP address: root@dur:~# root@dur:~# tail /var/log/mail.log Aug 28 04:39:45 dur postfix/master[6667]: terminating on signal 15 ...
6
votes
1answer
290 views

Mailman / Postfix Configuration Assistance

I am writing for some help regarding Postfix configuration. I cannot seem to get Postfix configured properly to transfer mail to the mailing list installed on the same server. I followed many steps ...
1
vote
2answers
170 views

postfix add single IPv6 address

I have my webserver set up to send out email as a smartserver using postfix and it does not allow any other machines on my network to send mail through it. I've been able to send email from my ...
3
votes
2answers
1k views

Protecting postfix from bruteforce attacks

a few days ago I've set up a VPS, including personal SMTP service using postfix + procmail under Debian / Wheezy. I am already seeing a LOT of hammering onto the SMTP and other ports. Here's an ...
3
votes
1answer
4k views

Add header to outgoing email with postfix

Can someone please provide an example on how to add a Precedence: bulk header to all outgoing emails using postfix. I would like to know what file(s) to create or edit and what I should put ...
0
votes
1answer
2k views

Postfix Configuration - different servers for subdomains and domain

I have a following setup: 1 postfix server: a.example.com that needs to accept all emails for any subdomain on example.com (*@*.example.com) and delivers to mailman account and also send emails to any ...
1
vote
1answer
865 views

Setting up SMTP-AUTH & TLS in Postfix

So I have been in the process of installing a Postfix Server on my CentOS 6.2 Virtual Private Server. I have been following this tutorial: ...
6
votes
1answer
420 views

Postfix configuration - keep the envelops

I have a postfix server that delivers mail and send a copy of the outgoing mail to a second server for content analysis using the following configuration (addresses and IPs have been replaced): ...
4
votes
1answer
265 views

Mail Server Spoofing Prevention

I was in the mail logs yesterday when i noticed the following messages.. only there were more like 10,000 odd hits... Jun 21 10:47:10 exi-svr-2 dovecot: pop3-login: Disconnected: user=, method=PLAIN, ...
0
votes
0answers
1k views

Mail Server not working?

I am trying to setup mail server since a long time but as I am new to Linux I have unsuccessfully configured it to the best as I could but now I need assistance. I have installed it using the links ...
2
votes
2answers
899 views

Too many smtpd daemon forks?

I have many forks from smtpd in my process list on my webserver. What does this mean? Is my mailbox full? postfix 2662 0.0 0.9 106336 4856 ? S 17:37 0:00 smtpd -n smtp -t ...
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0answers
2k views

SMTP Auth - SASL on Dovecot, Postfix and CentOS 6.2 (and Open-Xchange)

I am trying to get open SASL to work on CentOS 6.2. I followed this tutorial: http://wiki.centos.org/HowTos/postfix_sasl I suspect it works perfectly for CentOS 5.x so all I really need is an update ...
1
vote
1answer
532 views

Check & filter outgoing mails in Postfix

I am looking for a way to check outgoing mails with rules like : mails sent to a particular domain mails sent without subject or with a specific subject mails with an attachment of a certain size ...
1
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0answers
181 views

Information about the 1630/master app

When I run $ sudo netstat -a --programs | grep LISTENING | grep 1630 I will get this output. Do you know what good are processes running under this app name? Why they I running on my system and if ...
2
votes
2answers
8k views

How to create Maildir directory with enough permissions for Postfix?

I have CentOS 5.5 with Postfix installed on it. I want to use local delivery agent with default setting, but I want it to store mail with Maildir directory style mailboxes. When I set the mailboxes ...
1
vote
0answers
172 views

Locating mail users and setup for RT

We have an AD where I work which handles usernames/email, authentication etc and all the rest. I've been trying to find our 'support' email address on there but soon realised that it exists not on ...
1
vote
3answers
356 views

antispam techniques in postfix on linux

We have an issue of incoming spam on the server hosting several domains. Its running postfix on CentOS 5.x. Please suggest the techniques that can be enabled on the server to prevent incoming spam.
2
votes
1answer
711 views

Postfix: Forward/Reroute mails with unknown recipients

I'm running a postfix/dovecot mail server and everything works quite well. What I want to do now is forward all mails with a recipient that does not have an entry in the local recipient table, to ...
2
votes
0answers
492 views

postfix queue file write error only when sending emails from smartphone

This might sound weird, but the thing is, that I cannot send emails from my smartphone even though it works from my desktop email client. I double-checked that the smtp settings are correct. This is ...
2
votes
2answers
3k views

Postfix: save every outgoing mail in files

I am using postfix as a SMTP server on a network that does not have internet connection. I would like to configure every mail client to send mail to the postfix SMTP server. When the server receive a ...
1
vote
2answers
7k views

Where to find the error messages of Postfix

I cannot sent mail by using Postfix (SMTP) on Ubuntu Server 11.04. So, there must be some errors, But where to see the error message?
4
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2answers
12k views

Where does postfix store email?

I can't find any documentation on how postfix stores email. Where is it stored, and in what format? I'm using Ubuntu server 11
2
votes
2answers
469 views

Mail send to my domain ends up in local inbox instead of exchange server

I'm running a MediaWiki install under Ubuntu Server 10.10. I have configured it to use the standard php mail() function with my local mail delivery agent (postfix). The mail gets sent from the ...
4
votes
2answers
444 views

configure postfix to accept mail from two WANs

I have a mac server but my question has long left the realm of the GUI. My last hope is a unix forum. I have a cisco router with two WAN ports. The mac uses postfix 2.8.3. I have correctly ...
3
votes
1answer
3k views

I am failing to send mail to a Gmail address using Postfix

I am trying to send mail to my test GMail account using Postfix (default Debian setup), and I am failing ("/var/log/mail.log"): Sep 26 16:13:43 sugarmailer postfix/smtpd[1473]: connect from ...
6
votes
3answers
7k views

Postfix doesn't send mail, complaining about “Host or domain name not found”

I followed these instructions in order to send mail and here's the Postfix log: Sep 26 00:46:24 tshepang postfix/smtpd[5728]: 8EE2464931: client=localhost[127.0.0.1] Sep 26 00:47:44 tshepang ...