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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Postfix Not sending mail, but can recive

Hey everyone I have an issue with my postfix server not sending emails. The server retrieves emails no problem, but when I go to send an email it just times out. It did sort of work before i added ...
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34 views

Postfix ignoring pcre login maps for sender

I am trying to figure out, why my postfix is ignoring my login maps completely without any errors in the log files. Return of command postconf -m displays that pcre is supported. btree cidr environ ...
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Postfix: prevent users from changing the real e-mail address

My postfix e-mail server is finally working well. Now, I need to prevent users from forging their e-mail addresses in the client programs in the "from" field in the header, because a user can send ...
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55 views

How to change the communication port between postfix and other servers?

I am having this trouble with our mail server (postfix): I try to send a test mail using mail command and it runs ok: mail mailamilmail@gmail.com Subject: bla bla (CTRL+D) But when I look to tail ...
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1answer
18 views

Does default postfix installation support ssl and sasl2 Linux Mint (Ubuntu)

I am trying to setup a postfix mail server locally only to send mails on Linux Mint 16. I was successfully able to send mails to non TLS MTA, but not to gmail. Later I found that I need to configure ...
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28 views

postfix, dovecot, rainloop, can't log in

I configured dovecot, postfix and squirellmail - everything works just fine i can send and receive emails. It's Debian Jessie 64 on ovh hosting (VPS SSD 3) I went one step ahead and i want to use ...
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43 views

[Solved]Postfix “Relay access denied”

I have built a new Postfix Server and have the following Problem. When I try to send a mail with the command "Mail" from another Server and the recipient is in another Domain i get "Relay access ...
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36 views

/ Owned by postfix:root after installing iRedMail

I followed this tutorial to install iRedMail on my CentOS 7 x64 System: https://www.digitalocean.com/community/tutorials/how-to-install-iredmail-on-centos-6-5-x64 Why the *"$@*3 is / now owned by ...
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26 views

Magento can't send mails using postfix on ubuntu

For some reason mail() function fails when we try to send emails, I debugged the Magento base code and I found that it generates a call to mail function like this: $result = mail('test@test.net', 'My ...
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69 views

send fake email using mail clients

assume that, you have a pop3 email address saved on your outlook or other mail clients, if you changed your user information in account setting like the following attachment you can send any@any.com ...
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47 views

Microsoft seems to block email from custom domain for any address except one

I have a VPS server at DigitalOcean with a domain. There is a postfix server and a mailman (mailing list server) running on it. Also my personnal email address is @hotmail.fr (nobody's perfect) but I ...
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88 views

ISPConfig mail: Relay access denied

I'm running CentOS 7 with ISPConfig 3. Mail was working perfectly, but now (probably due to some update) isn't working. I was trying to reinstall postfix, amavis and update ISPConfig, but I can't get ...
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19 views

Postfix forwarding using virtual settings

I have gone over multiple articles which walk me through the process - I feel I understand the what and the why's - but I cannot send a email to test. Here are the steps in detail. Here is a ...
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1answer
27 views

Postfix address remapping

My website contains a form (contact us) that send an email (WordPress via Ninjaforms). I've configured both ninja-form and postfix to send the email from myname@e-levelcom.com However it keeps sending ...
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37 views

Postfix mailbox_transport and mailbox_command

I have Postfix set up in main.cf to use mailbox_transport=lmtp:unix:private/dovecot-lmtp as LDA, which works fine. I also need to enable mailbox_command in order to pass internal sanity checks as ...
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19 views

Using mail spool file for an entry in /etc/aliases gives errors in EL7

For years (with EL6 and before), I have successfully used entries like this in my /etc/aliases file: bugs: /var/spool/mail/bugs The idea being mail to a non-user can be shoved into a file for ...
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1answer
46 views

postfix MX host not found

Im am trying to send mail using Postfix, but I get the following error for all emails: May 13 12:44:46 myhost postfix/qmgr[12169]: A6D9644526: from=<x@y.com>, size=317, nrcpt=1 (queue active) ...
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56 views

Email not received with mail command from terminal in CentOS

I am trying to send mail with the following command: echo "Hello" | mail -s "Hello" myaddr@mydomain.com and than checking the exit status as: echo $? which outputs 0 Of course myaddr and ...
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32 views

Change Postfix email recipient on Ubuntu 15.10

I installed Postfix on my Ubuntu machine and i'm using Gmail's SMTP to actually deliver the emails using this tutorial. This is the email headers: Reporting-MTA: dns; crmpicco-desktop X-Postfix-...
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1answer
37 views

Postfix smarthost sends as root

I have a Debian 8 test server that has only root. I have configured it to send emails with https://wiki.amahi.org/index.php/Gmail_As_Relay_On_Ubuntu by making use of a new gmail account eg atuxxxxx6@...
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2answers
46 views

IPV4 supportive mail function in linux

I'm working on a linux machine where changes are not allowed. But While I use sendmail function I'm getting following error. sendmail: warning: inet_protocols: IPv6 support is disabled: Address ...
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11 views

Postfix internal scheduling of email servers; loadbalancing and use cases

I've learned about the parameter smtp_randomize_addresses and am curious which use-cases where one would benefit to have the same priority for MX records and allow Postfix to randomly pick email ...
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1answer
86 views

Postfix: error while loading shared libraries: libmysqlclient.so.16 [closed]

postfix: error while loading shared libraries: libmysqlclient.so.16: cannot open shared object file: No such file or directory [root@localhost ~]# mysql -uroot -p*** -e "select version();" Warning:...
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1answer
46 views

how to adjust the boot sequence using systemd

I need to send email using postfix as server once wifi has received IP address (based on dhcpcd). It seems that systemd by default boot postfix before wifi (wlan0) is ready. The consequence associated ...
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150 views

Install mdadm without postfix in ubuntu trusty

I want to build a RAID system on top of Ubuntu Trusty. When I do apt-get install mdadm A screen pop up asking me to configure postfix. Because I will run this installation in automation script. Is ...
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15 views

Include another file in Postfix proxy configuration

I am trying to configure Postfix with FreeIPA and need to provide the bind DN, base DN, password, servers etc. for LDAP proxies. These need to go into four different configuration files, making it a ...
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51 views

Spam in Zimbra OpenRelay

First apologize me for the grammar, english isn't my native language. The problem I have is users from our local zimbra mail are getting spam messages from other email addresses who don't exist, like ...
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14 views

postfix&dovecot — adding some spam filter

I have setup my SMTP server (on a Linux/Ubuntu 15.04 VPS rented at OVH) according to http://www.binarytides.com/install-postfix-dovecot-debian/ (so there is no traditional user on the box; hence it ...
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1answer
68 views

is my newly setup mail server on my laptop hacked?

I have just installed postfix on Arch Linux. I am following Arch wiki to set aliases to set following line in /etc/postfix/aliases root: edward after this I ran postalias /etc/postfix/aliases and ...
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83 views

Why postfix doesn't verify the sender is who they say they are using reverse dns, SPF or DMARC?

Making sure postfix isn't an open relay, I tried to send a mail from my mail address towards my mail address, the telnet log goes like this: Resolving hostname... Connecting... SMTP -> FROM SERVER:...
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46 views

Postfix can not send from Mydomain - only to third party domains

So I have setup an Ubuntu server and want to use postfix in order to sendmail via php. The server host: example.com When the server sends an email to anything@example.com, I get an error. If sending ...
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114 views

Does postfix using mail command report if an email was unable to be sent to an address?

I am writing a program that will be sending external emails using postfix with the mail -s command and I need to verify that the email was sent to the specified address. In which case, I am curious ...
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2answers
159 views

(Raspian) DHCP startup race conditions - lots of service failures at startup (no DNS for ~5-10 seconds)

(Edit: This applies to much more than postfix; it's just where I noticed/debugged it) I've installed postfix, but when it starts up and creates its chroot, it gets an empty copy of /etc/resolv.conf ...
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123 views

Why does postfix copy /etc/resolv.conf to its chroot too early, causing DNS failures?

Edit: For anyone else having this problem, this question was actually was very badly asked/understood and a better description of the problem (and the correct solution) can be found here. I'm trying ...
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1answer
58 views

How do I debug email delivery delays?

In order to get notified about some stuff going on on a server, I use simple mailutils command executed @hourly by cron: cat $file | mail -s "Subject" $receivers where $receivers is a list of a few ...
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35 views

Postfix sending hostname needs to be different for different domains

We have an application that generates outbound email for a range of domains. The app servers connect to a part of Postfix servers in a DMZ and these then forward on to filtering in a second DMZ. We ...
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2answers
146 views

OS X Postfix no TLS found

I'm working on OSX El Capitan. About week ago everything worked fine, but then I changed my gmail password and now I can't send emails any more. Additional configuration for /etc/postfix/main.cf is: ...
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2answers
407 views

Sending HTML using mailx with postfix 2.6.6 and centOS 6.4 [duplicate]

I'm trying to send an HTML email from our CentOS server to users. In the long run I'll be building a COBOL program that runs the command to send reports to the user. Here are a few details. ...
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2answers
75 views

Is it possible to redirect root email to axigen internal e-mail?

For a few month I've been using Axigen webmail as my main e-mail server. For the last month I was looking for a way of redirecting my root e-mail, as well as my crontab outputs into an internal ...
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1answer
97 views

Postfix using external smtp server problem

I am not sure if this is the right stack exchange for my question, there are multiple stack exchange were my question might fit. I have setup my postfix configuration to send my emails through an ...
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2answers
118 views

Forward Postfix mail based on regexp

We are buildng a ticket system using PHP. We have now bumped into the problem of identifying customer replies. Placing an id in the subject will not do because users could remove this. Posting an id ...
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2answers
187 views

Change user maildir to custom location upon creation of the user

I use Ubuntu 14.04.3 LTS . How to change the location of the Mailbox /home/user/Maildir/ to /Location/Mail/? I dont have to create home directory for that user. I did some changes in the /etc/default/...
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2answers
185 views

Postfix: Remove References to Server Software

Every time my postfix servers sent emails at the destination the emails headers include the following: by suppaserver.example.dev (Postfix) with ESMTPSA id 79D412E1A3A How can I remove the (Postfix)...
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129 views

Postfix: Users impersonating other users at same domain

I've a postfix email server running and everything was fine... well until someone decided to impersonate other users. The current situation is: user1@mydomain.dev can send email with a faked from ...
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87 views

Mark emails on my mail server as read

I have a Virtual Private Server, running a mail server for my domain. I use postfix and dovecot. I'm using IMAP. On my MacBook, I can retrieve my mails using the default app Mail. However, every time ...
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13 views

postfix forward throttling

I have some problem with throttling for my mail system. main.cf initial_destination_concurrency = 1 default_destination_concurrency_limit = 1 default_destination_recipient_limit = 2 ...
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2answers
52 views

Control character handling in cron/mailx

I have a cron job which runs a long script producing lots of output. Some of the output is lines delimited by single carriage returns; when run from the command line, these make the successive lines ...
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92 views

Scan outgoing Postfix email for spam with Spamassassin

Is there a way to filter outgoing Postfix email for spam possibly with Spamassassin? I found this answer about how to do it with Amavis but it's terribly outdated and not very well explained.
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1answer
608 views

postfix log messages: RBL lookup error: Host or domain name not found

I'm finding quite a few of these types of messages in my postfix log: 17:40:55 smtpd: warning: 34.77.82.185.b.barracudacentral.org: RBL lookup error: Host or domain name not found. Name service error ...
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75 views

Postfix: Outgoing Email Filter + Deliver sent email to a folder

I'm running a filter for incoming email on Postfix that basically sends the email through SpamAssassin and then delivers it to the user by using dovecot-lda. This is happening by editing Postfix's ...