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

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18 views

Have trac and postfix play together well

I'm having really hard time configuring trac/postfix combo. I'm sure experienced admins know what the problem is... Errors I'm receiving, Postfix says: Jul 25 00:54:24 vps postfix/smtpd[2476]: ...
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2answers
49 views

I don't have Sendmail but port 25 is still using by Sendmail

I am running this command: telnet 87.106.xxx.xxx 25 And it says Trying 87.106.xxx.xxx... telnet: Unable to connect to remote host: Connection refused But telnet localhost is running properly. ...
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1answer
16 views

How to execute external programs in the lookup table mechanism?

I need to execute a custom algorithm via header_checks lookup. I have the configuration smtpd_sasl_authenticated_header = yes to see in the headers what user is sending the message, eg: Received: ...
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0answers
16 views

Zentyal default email address

I'am using zentyal as a installation on top of ubuntu 14.04, just using the dovecot and postfix as the mail system. I am unable to logon though roundcube as postmaster@amc.local or root@amc.local ...
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1answer
17 views

rDNS and hostname conflict

My server has 3 IPs: 2 for dns stuff for example 192.0.2.1 and 192.0.2.2, and one that I use for outgoing email, let's say 192.0.2.3. My hostname is mail.mydomain1.com. The problem began when I ...
-1
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1answer
36 views

Postfix insists use port 25

I have a VPS server LAMP and all it works normaly. But when I try send a email to external server (outlook.com), this error occurs (visible on postfix log): Jul 23 18:15:00 serv postfix/smtp[1792]: ...
0
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1answer
24 views

Postfix still complains that “certificate verification failed” even when “smtp_tls_security_level = fingerprint”

I'm attempting to use Postfix (version 2.6.6 on RHEL6) to connect to and send mail via a mail relay on our internal network. I want to connect with STARTTLS on port 25 (port 465 is not available on ...
1
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1answer
19 views

Swiftmail cannot use sendmail/postfix

When I try to run some Kohana swiftmailer I get the following error in maillog: Jul 23 17:18:37 ads postfix/sendmail[5818]: fatal: execv /usr/libexec/postfix/smtpd: Permission denied The output of ...
1
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1answer
31 views

How to set up the routing mail server with public static IP interface and private IP interface

I a building an email server that will use Postfix for SMTP, and Dovecot for IMAP. This server will have two interfaces: wwan0 - this interface has a static public IP address, and will be used by ...
0
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1answer
17 views

Unexpected failure, please try later (in reply to end of DATA command)

while trying to send emails to the following address some_user@f-gs.jazztel.es i always get the following error message. Could any one tell where can i look in order to find what's going wrong? This ...
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0answers
31 views

Postfix configured as relay with my domain name

I need to send mail from my server directly connected to internet, but impossible it's doesn't work ? I'm not sure of my file cacert.pem Can you help me to debug my postfix ? main.cf relayhost = ...
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0answers
38 views

determine which application is sending mail via postfix

I would like to track down which applications (other than PHP, which I can track via mail.log setting in php.ini) are connecting to and sending email via postfix. Is this possible via any log ...
-3
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0answers
22 views

Mail Server installed and configured but not working [on hold]

currently I have a vps with Ubuntu 12.10 and I have installed postfix and dovecot and configured them in similar way as given in this tutorial.But when I wanted to test, I was unable to send mail from ...
2
votes
2answers
174 views

(Postfix + Dovecot) All emails to @aol.com being deferred

I'm running a dovecot/postfix mail server on debian and am having some issues. Everything is working fine except all emails to @aol.com are being deferred. The error code gave me: "The Reverse DNS ...
0
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1answer
19 views

Postfix 5.7.1 Unable to relay [deliver internal mail directly]

I have the following scenario: serverA = RHEL5 using Sendmail serverB = RHEL6 using Postfix serverC = RHEL6 using Postfix gwsmtp = relayhost example.com = domain name As we are migrating from ...
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0answers
19 views

Postfix/dovecot remove LDAP user

I have to remove or blacklist an LDAP/dovecot user. The authentication is setup from active directory what I cannot manage so I thought there should be a way at least to disable this specific user on ...
1
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1answer
29 views

How to rate limit outgoing SMTP connections for Postfix

I have a postfix instance running on a VM. The VM provider shuts us down if we exceed a threshold of SMTP connections per minute - something like 10. In a typical day we might send 1000 messages, so ...
1
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2answers
81 views

Spammer spoofed localhost? Or server fail? How do I secure against this?

I noticed a spammer got through postgrey AND SpamAssassin, which was very strange. I examined /var/log/mail.log and saw some suspect lines: Log below, or on Pastebin: http://pastebin.com/k7sKnvGE ...
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0answers
11 views

Postfix stops responding after adding virtual account config

I am trying to configure postfix to work with virtual hosts using Centos 6.5. I am trying to recieve emails for paul@git.exampe.com. (I actually run different domain than example.com, but the third ...
-3
votes
1answer
50 views

Setting SMTP Banner to match PTR [on hold]

I'm attempting to fix an error that I get when I run a DNS Report on my VPS. According to the report: SMTP greeting Malformed greeting or no A records found matching banner text for following ...
1
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1answer
21 views

how to handle this case if fetchmail fetches spam from yahoo, and postfix does not deliver because host does not exist

I have fetchmail collecting from yahoo and passing the mails to the local postfix server. If I have a 4xx Error , because for example the sender domain does not exist, fetchmail will try to pas this ...
0
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1answer
31 views

Allow account to exchange email with admin only and hold/redirect other incoming messages

We offer hosting service to some clients and have a mail server with postfix using the virtual transport, for virtual domains. I have a weird request from my boss: The idea is that late paying ...
0
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0answers
39 views

Postfix: Relay Access Denied, Reverse DNS Mismatch Error

I have dovecot and postfix installed to handle emails. I have used telnet to check imap and it appears to work fine but when i run telnet mail.domain.com smtp i get 554 5.7.1 <user@gmail.com>: ...
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0answers
18 views

Postfix - unauthorized mail gets relayed to another server after address resolving

I have postfix configured for domain example.com with couple of accounts, like info@exmaple.com, support@example.com aliased to gmail accounts. The problem happens when smtp server receives mail from ...
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0answers
24 views

emails are coming from localhost instead of php sendmail_from

I'm trying to understand what I'm missing here. I have following PHP script: <?php ini_set('sendmail_from','XXX@XXX.TLD'); mail('YYY@YYY.TLD',rand(),rand()); ?> ... and even though I set ...
0
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1answer
19 views

Postfix relaying to local instead of relayhost

I am trying a simple postfix relay of emails via an SMTP server. But I see from the logs that the mails are relayed to local and not to the relay host. The main.cf configurations are below, ...
1
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1answer
30 views

Postfix Outgoing Mail Suddenly Being Deferred

I am having trouble sending mail with postfix after changing the "Format for usernames that include domain" under the "Mail For Domain" template. Basically I had everything working but then changed ...
1
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0answers
26 views

How to make Postfix to POST incoming mail to an external server?

I have a web app on Server A and a Postfix mail server on Server B. I want all incoming emails be forwarded to the web app via a POST request. I also need to capture attachments. I was able to ...
1
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0answers
30 views

Postfix header rewriting

I'm currently trying to install a Postfix server (trying to start an SMTP service for people) and was going through some newsletter senders I was receiving emails from lately, and saw something ...
2
votes
1answer
25 views

Postfix Active Queue vs qshape

I have been looking in vain, in Postfix documentation and otherwise, to understand the difference in output between the mailq command and qshape. (The underlying problem is slow mail delivery.) ...
0
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0answers
19 views

Properly pipe mail to script in postfix

We are migrating from sendmail to postfix. I would like to know if piping through /etc/aliases is still the way to go. We would like to pipe mails of certain users to a separate script. It seems to ...
0
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1answer
22 views

Have Postfix/OpenDKIM sign only authenticated and local origins

I'm signing email just fine, but I don't want to sign relayed email when the "From" address is one of the domains I'm signing. What's the right way to configure Postfix/OpenDKIM to sign only from ...
1
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2answers
30 views

Postfix Domain Whitelisting in Combination with Sender Authentication

I'd like to whitelist several domains in my Postfix configuration in such a way that all e-mails from those domains are accepted as long as they're properly authenticated using SPF and/or DKIM, should ...
0
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2answers
63 views

X-Postfix; Mailboxes not found when mail comes from others servers

I had installed and configured dovecot, postfix, and postfixadmin step by step from this tutorial on my server (CentOS6). I can create virtual mailboxes as well now and can login to roundcubemail, I ...
0
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1answer
30 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
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2answers
51 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 ...
1
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0answers
39 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 ...
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0answers
32 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
54 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
2answers
78 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 ...
0
votes
2answers
25 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 ...
0
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2answers
23 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 ...
1
vote
1answer
38 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
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1answer
23 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
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1answer
41 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 ...
0
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2answers
36 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 ...
0
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2answers
40 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
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1answer
52 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
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1answer
31 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 ...
0
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0answers
36 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 ...