Free and open source mail transfer agent (MTA) that routes and delivers email

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0
votes
2answers
17 views

Error sending emails from a mail server relay type falling into the spam folder (using postfix)

Here I show one of the emails that come to Yahoo, which are falling directly into SPAM folder. The SPF goes smoothly, the DKIM passes without problem, even DMARK passes without problem, but just keep ...
5
votes
1answer
2k views

Postfix: Custom Reject Message for Certain Email Adresses

I would like to reject mails to a certain address with a custom message. Mails to other non existing addresses should be unchanged. How can I do that? I'm using Postfix 2.7.0 on Ubuntu 10.4. ...
0
votes
2answers
659 views

SMTP server rejects connection without SSL enabled

Setting up a new CentOS 6 server with Plesk 10.4.4 using Postfix, I am unable to send emails from any user account on port 25, 465, or 587 without having SSL enabled. If I check to use SSL in Apple ...
0
votes
1answer
23 views

Postfix log showing same error every 5 minutes

I have an error in my mail.log (/var/log). I'm using postfix. I am only using it to send email from my web app (Python/Django) for registration (I haven't configured for inbound, the MX isn't pointing ...
0
votes
2answers
20 views

SMTP don't work when try to send mail from mail clinet

Mail server works fine when send mail from server, but when I use some mail client it not work. I found this in logs: Jul 12 19:45:04 tvsite postfix/smtpd[3356]: warning: hostname adsl-bb29-l44 does ...
0
votes
0answers
23 views

postfixadmin Could not log into IMAP/POP server

I had installed and configured dovecot, postfix, and postfixadmin step by step from this tutorial on my server (CentOS6). But I don't know why, when I want to create Mailbox from postfixadmin then I ...
-2
votes
0answers
17 views

Postfix only works in localhost

I have a server running ubuntu 14.04, and i need to be able to send e-mails from my server, to do that i installed Postfix. I followed this tutorial. But here's the think, my server is able to receive ...
1
vote
1answer
35 views

Server sending spam - how to find out why?

I have a CentOS 6 on a dedicated server. I'm the only one with shell access to it. I host 2 Wordpress and few simple PHP sites there. My hosting company just emailed me that they blocked my port 25 as ...
0
votes
1answer
22 views

Postfix: Two domains in mydestination - where are the mails delivered to?

I have two domains in the mydestination parameter of Postfix: mydestination = foo.com, bar.net The MX-Records for foo.com and bar.net are set to mail.foo.com. In my /etc/aliases I map admin to the ...
0
votes
1answer
37 views

Transaction failed 554

I created mail server by this tutorial http://www.unixmen.com/install-postfix-mail-server-with-dovecot-and-squirrelmail-on-centos-6-4/ I can send emails to myself it works fine, but when I want to ...
0
votes
1answer
33 views

Postfix how to triggering my script when outgoing email status is sent?

I want to run a program when postfix has successfully sent out a mail (local or remote). I would like to pass the headers to program and if possible also the destination ip or address (exclude spam ...
0
votes
2answers
64 views

Postfix and dovecot auth

So I am trying to get my head around how this works in relation to how people can send credentials to authenticate via smtp and send mail. With a typical default set up of postfix and dovecot (with ...
0
votes
2answers
53 views

email sent from my server shows up as spam [duplicate]

I know this question has been asked and answered a couple of times, but I can't find any reference to my particular problem. I've set up Postfix and Dovecot on my Debian 7 VPS and I can send mail, but ...
3
votes
1answer
804 views

Postfix flow/hook reference, or high-level overview?

The Postfix MTA consists of several components/services that work together to perform the different stages of delivery and receipt of mail; these include the smtp daemon, the pickup and cleanup ...
1
vote
5answers
3k views

How do I forward and autoreply to incoming emails?

Our company just switched to a new email domain and wants to keep the old domain around for a year as they notify everyone about the change. The old email domain was on Exchange 2007 and the new email ...
-5
votes
0answers
24 views

How to download inbox using postfix / dovecot on an iPhone? [on hold]

I recently just setup postfix / dovecot mail servers. I am able to login to the mail server using my iPhone and send a message to a different email address, i.e. (a gmail address) but for whatever ...
0
votes
2answers
19 views

Remote IP and SMTP Proxy

Is it possible to proxy emails - with postfix for example - transparently so the backend mail server will get the last SMTP server IP address (rbl purpose) and not the Proxy IP address? If it is ...
1
vote
1answer
35 views

Why does mail -E let me send empty messages?

~ > which mail /bin/mail ~ > ls -la /bin/mail lrwxrwxrwx 1 root root 22 Feb 25 14:18 /bin/mail -> /etc/alternatives/mail According to man mail, -E If an outgoing message does not ...
0
votes
1answer
20 views

postfix unable to receive external emails

I have setup an email server with postfix and dovecot. Installation went fine but I am not able to receive emails from external users(gmail, yahoo etc) but I can send email to external users. When an ...
0
votes
1answer
1k views

postfix relaying all mail through office365 problems

This is a rather long question with a long list of things tried and travails so please bear with me. The summary is this. I am able to relay email from ubuntu through office365 using postfix; the ...
0
votes
1answer
645 views

Postfix connects to wrong relay?

I am trying to set up postfix on my ubuntu server in order to send emails via my isp's smtp server. I seem to have missed something because the mail.log tells me: Jan 19 11:23:11 mediaserver ...
0
votes
1answer
1k views

How do I set up Postfix *_restrictions configuration parameters safely with whitelists and blacklists?

Learning and Trying to Understand I've spent the last week learning about what Postfix can do to help reduce spam. If I understand correctly the different *_restrictions configuration parameters ...
-2
votes
0answers
20 views

Unable to login to squirrelmail [on hold]

Have problem with squirrelmail, can't login... This is what I found in log file: Jul 9 13:57:45 tvsite authdaemond: ldap_simple_bind_s failed: Can't contact LDAP server Jul 9 13:57:46 tvsite ...
0
votes
3answers
144 views

postfix sending newsletters as spam to the receivers [duplicate]

I have some problems with my postfix setup. We send newsletter regulaly to our customers once or twice a week. and we have expierenced that many customers do not get their emails, it's simply because ...
0
votes
0answers
26 views

Postfix Policyd both for SASL and non-SASL mail

I have configured Policyd v2 (cluebringer) to apply quota on msg count for SASL and non-SASL users. It is easy in policyd [1]. However I don't know how to configure postfix (2.7.1). Right now I have ...
1
vote
1answer
293 views

Postfix policyd dual usage setup - greylisting and quotas

On our server we are using policyd 1.x together with Postfix 2.1.5 for greylisting and enforcing incoming quotas from unauthorized users (ie. mail for our domains). For this, I have set up Postfix ...
0
votes
2answers
27 views

How to migrate a small handful of users from one mail server to another

Here's my situation: I've got a mail server, we'll call it mail1.site.com. And what I want to do is, build a new mail server, mail2.site.com, and migrate all the users over. The setup is ...
1
vote
3answers
3k views

Dovecot user lookup fails for email addresses

I have Dovecot v2.0.11 installed on a FreeBSD server and the user lookups for incoming email addresses are failing, but lookups for system users is successful. Dovecot is setup to use system users, ...
0
votes
2answers
37 views

View realtime list of connections to Postfix

I am running Postfix on a linux box with a couple hundred local users with mailboxes. Is there a way to monitor all incoming connections (SMTP) to the Postfix service? I.e. a live stream of "IP ...
0
votes
1answer
1k views

554 5.7.1 <mail_addr>: Relay access denied centos postfix

I have problem in send mail from postfix in centos I have following setup mail server postfix for sending mail but I am getting error. As in the link I tried following commands telnet localhost ...
0
votes
1answer
480 views

Fetching mails into postfix/dovecot via pop3/imap

I managed to set up my first Debian mail server using postfix and dovecot. I use roundcube to access my IMAP accounts which are defined by virtual users in a MySQL data base. Everything works ...
4
votes
5answers
4k views

Outgoing only SMTP server

I want to setup an outgoing only SMTP server on Debian, so my Web-applications will be able to send e-mails via it. I don't want to use another hosts because of security and customizability of my own ...
0
votes
4answers
138 views
+50

Postfix setup on AWS EC2 using SMTP relay

On ec2 instance, the IP is dynamic, and if I want to use third party SMTP gateway such as sendgrid, what is the suggested values of the following fields? myorigin myhostname mydestination Assume ...
2
votes
1answer
727 views

Relay Access Denied (State 13) Postfix + Dovecot + Mysql

So we have been scratching our heads for quite some time over this relay issue that has presented itself since we re-built our mail-server after a failed Webmin update. We are running Debian Karmic ...
0
votes
1answer
39 views

Reverse DNS does not match SMTP Banner

We are using postfix on centos as a mail server to send out newsletters. but in the mail log file I can see that many receivers rejected our newsletters. and with the help of mxtoolbox, I found a ...
0
votes
1answer
24 views

How to set up postfix / dovecot with SSL to send receive emails from iPhone

I just installed a fresh copy of dovecot on my VPS. I am also running postfix, and I first went through this guide I followed everything as explained. However when I try to send an email from my ...
3
votes
1answer
2k views

postfix + opendkim not signing correctly. how to debug this?

EDIT: I did get a little further but all posts on my search say permissions are wrong or regenerate key but I fixed that to be 644 as well as owned by DKIM AND I keep regenerating the key but it is ...
3
votes
1answer
932 views

How can I “filter” postfix-generated bounce messages?

We are using postfix 2.7 and custom SMTPD (based on qpsmtpd) in highly customized configuration for spam filtering. We have a new requirement to filter postfix-generated bounces through our custom ...
2
votes
1answer
2k views

Postfix certificate verification failed for smtp.gmail.com

I have problem, my email server using postfix with gmail smtp, i use account google apps, but always ask for SASL authentication failed, I sent an email using php script, after I see the error logs in ...
0
votes
0answers
21 views

How to force postfix follow (dns) mx priority even for local domains on Linux Ubuntu Server with Plesk

Use Case Scenario I have a Linux (Ubuntu 12.04) with Plesk (11.5) hosting server where some clients use the server's mail service only as a failover. They set up an external mail server with higher ...
1
vote
1answer
82 views

CentOS 6.5 Webmail Server: warning: SASL: Connect to private/auth failed: No such file or directory

I'm trying to run a webmail server on CentOS with Postfix, Docecot and Roundcube. Whenever I try to send mail or send a test email to my server it fails. I can login so looks like Dovecot is okay. ...
0
votes
4answers
974 views

cannot send mail to postfix /w iptables linux proxy

I have two separate servers, both running Ubuntu 8.04. Server 1 has the real domain name of our site, let's refer to it as example.com. Server 2 is a mail server I have setup with postfix/courier. ...
0
votes
0answers
27 views

drop smtp live connection

So the problem is that I think my server got DDoS attack with SMTP packet (my mail server). What I can see is that the attacker abuse the smtp_connection_cache. The attacker keep connections (smtp) ...
0
votes
2answers
843 views

Postfix smtp error 450 (failed to add recipient)

I have debian server with postfix and roundcube. After an attack we are on 2 blacklists, but I don't think that this is the main problem. I can't send mail to any address. I tried to find the ...
0
votes
1answer
28 views

Different log file per postfix instance

How can I set a custom log file for each postfix instance? Specifically, I need to identify entries generated for different instances of postfix, and would be better for the tooling if each instance ...
-1
votes
1answer
24 views

Prevent postfix sending spam from fake local address

To make it simple, 1. I have an email server Postfix (not open relay) 2. filtered with ASSP (filter incoming mail/connection) The problem: some bad guys (spammer) send tons of spam using my email ...
0
votes
0answers
28 views

postfix nested MAIL command

I'm trying send emails using postfix. I can send emails to other users (just now only in a local enviroment), but for some reason, when I execute the command: mail -s "subject" use@domain ...
0
votes
2answers
1k views

Centos Postfix/Dovecot - Permission problems after migration upgrade

We are migrating from an old Centos 5.5 system to a new Centos 6.4 server. The postfix version looks the same, but Dovecot has gone up from 1.x to 2.x. It uses MySQL to store the mail account details ...
0
votes
3answers
1k views

why is mailgraph not updating?

I just installed mailgraph on a Linux Ubuntu 10.04 box monitoring Postifix. Everything seems to be working fine, but the graphs are not always updating. When I refresh the web page or close the ...
0
votes
1answer
28 views

Postfix with Pgsql support

I'm trying to find an alternative repo with postfix that has pgsql support on Cenots 6. I previously used CentAlt but since that seems to be dead now i'm trying to find an alternative. I would ...