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

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2
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32 views

Postfix SASL with Dovecot and Authenticated Smarthost

I have a bit of a problem; I have configured postfix to use dovecot for SMTP AUTH, therefore I had to specify dovecot authentication in the main.cf file. The problem is, I need to also authenticate to ...
2
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46 views

Postfix refuses to send mail to some recipients

I got a third-party application running on localhost trying to send mails with postfix via smtp on the same machine. The problem is that postfix seems to refuse mails to some recipients: ...
2
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0answers
115 views

How to route some email accounts of a domain with transport_maps to another MX if user doesn't exist locally?

The MX server in my domain example.com point to my Postfix server. However, I have also configured a Google Apps account responsible for emails of example.com. I want all emails to go to my Postfix ...
2
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0answers
254 views

Diagnose SASL LOGIN authentication failure with postfix and sasldb

I am trying to configure a Postfix SMTP server on my personal machine (ubuntu server) using sasldb2. So far what I have set up works well with the test command: testsaslauthd (however it may be ...
2
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0answers
106 views

Mail Service requires reboot every few days

I'm kind of new to postfix so am hoping someone can point me up the obvious here I have a Postfix working as SMTP server and everything is fine for a few days. Then without warning or apparent reason ...
2
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452 views

Postfix server begins send spam immediately after starting

I've installed a postfix server on a debian os & also I've installed apache 2.0 with php on same machine Several days ago my server begun to send a lot of spam messages via postfix. I understood ...
2
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958 views

Randomly getting Postfix SSL_accept error / Dovecot TLS handshaking Disconnected

I have this really weird problem since a couple of days/weeks: more and more people are reporting problems connecting to the mail servers (Dovecot IMAP and POP3 as well as Postfix SMTP) in SSL mode. ...
2
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1k views

MailScanner stuck in endless loop

I'm trying to install MailScanner and it seems to be stuck in a infinite loop. It scans the same messages and when it's done, it doesn't requeue them into postfix: May 3 14:58:13 marine ...
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656 views

Postfix sasl relay host - weird behaviour

Previously I had a relayhost set in postfix to mailhost.zen.co.uk - I don't think it accepts SASL - only TLS. So I though I would try changing to a different relay host. However, the following log ...
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28 views

Postfix — auto blacklist senders who send to 'honeypot' email addresses

I'm using postfix + spamassassin (amavis) now and I'm trying to increase my hit rate, so I've been looking at the logs to try to see any patterns in email that is obvious spam but gets low scores. ...
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201 views

Ubuntu LTS 14.04 - Postfix spam from localhost / 127.0.0.1

Our server lately seems to send spam from our (legitimate) info email user. Actually info is not a real user but a forward to a Google mail address we use to gather email from other places. I have ...
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61 views

Postfix: How to use a simple script to map recipient addresses 'virtual_alias_maps'-style?

I would like postfix to consult a simple (bash/python) script in order to find out (virtual_alias_maps - style) before-queue whether or not a recipient address it legitimate. E.g. i'd like to use mail ...
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51 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 ...
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63 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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134 views

When does Postfix not perform lookups in virtual_alias_maps?

I'm having a real pickle of a problem: I have a Postfix 2.6.6 / CentOS 6 server that's set up to forward mail from specific aliases to specific destinations. This is done through a mysql ...
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0answers
49 views

Postfix on Linux: easy way of masquerade_exceptions=<all system users>?

... well, the subject says it: in a NULLCLIENT configuration, we want to have all normal users to be masqueraded, but all system users should be exposed. The sysadmins get system user's mails from a ...
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0answers
20 views

Make Postfix add ReplyTo based on the receiver

I need Postfix to add a ReplyTo header to certain e-mailadresses to somewhat emulate a mailinglist. Example: user@domain1 sends message to user2@domain2. The shared@domain2 get the message with both ...
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0answers
64 views

POSTFIX: how to determine how many connections are currently active

I'm running postfix on a mail server which is used by a couple hundered users. One user is getting "Connection Interrupted" errors in Outlook when attempting to send. I have not had reports of this ...
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123 views

Login to SquirrelMail as a virtual user

I am on CentOS 6 with Postfix, Dovecot, and PostfixAdmin. I have configured an external domain with the user me@domain.com as a virtual user. It's receiving mail without a problem at ...
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104 views

Postfix configuration with DKIM to send mail from multiple domains

My current setup is a Postfix installation configured with DKIM on a server with hostname prod01.example.com The server is used to send out mail on the form webshop@example.com, ...
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172 views

Postfix transport relay based on result of MX lookup

You can tell postfix to relay all mails for *@gmail.com via your account on smtp.google.com using transport maps: # /etc/postfix/transport gmail.com smtp:[smtp.gmail.com]:587 . # ...
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20 views

Postfix master issue

Today i noticed the following in my postfix logs: I got this in logs: Mar 6 13:36:16 my_server_name postfix/smtpd[23482]: connect from <other_server_IP> Mar 6 13:36:16 my_server_name ...
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120 views

Postfix performance and how to increase my throughput?

What I've read so far: Postfix Tunning Postfix Bottle Neck Analisys The Book of Postfix (chapter 22) I have similar specs to this guy but I'm only able to send about ~1300 emails/hour What I've ...
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2k views

postfix queue active and mail transport unavailable

I am not very familiar with postfix, but I am pretty sure that what I am seeing in my logs is not a good thing, and I was hoping someone here might be able to shed some light on what is going on and ...
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36 views

How to configure Postfix to only send out emails with a certain header?

I'm setting up a local development VM and I was able to redirect all sent out emails to a local mailbox using virtual_alias_maps with the entry /.*/ username. What I'd like to add is an option to not ...
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152 views

Missing Client IP in postfix Received header

I just noticed my postfix setup has been having a problem for some time now. When receiving (some) mail from German freemail provider web.de, the following headers are found inside the mail postfix ...
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146 views

How to use ViMBAdmin with Courier (Mail Server) Postfix / MySQL

i've setup and got courier and Postfix working but ran into a issue when setting up ViMBAdmin. Courier cannot read the passwords from the database i believe, anyone know how to audit the daemon to ...
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157 views

Postfix: Resend 'hard' bounces

I had a number of messages get rejected by the recipient's mail server with a status 550 code due to an IP address blacklist. I've sorted the problem that caused the host to become blacklisted, and ...
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88 views

Prevent spam being forwarded by Postfix (while locally delivered to a Junk folder)

We have a pretty standard Postfix/Amavis setup where we use the Dovecot LDA to deliver mail locally. Amavis passed spam mail and we use Sieve to drop it in the Junk folder of the user. The problem is ...
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0answers
35 views

“Masquerade” mail sender on a multi-domain shared hosting

I've a single host with CentOS 6.3. I manage that host via SSH. The server itself is uname -n: servername.foo.com. On this host I've multiple, unrelated httpd vhosts. The problm is: when one vhost ...
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68 views

Postfix - mixing virtual_aliases and virtual_mailboxes (catchall)

I'm running postfix (2.9.6) with dovecot (2.2.5) and I two domains: example.com as a virutal_mailbox_domain example.org as a virtual_alias_domain I'd like to set up two different catch-all rules ...
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678 views

Cant get IMAP to work on debian & postfix

I'm trying to setup a simple mail server on a debian vps with postfix and dovecot. I can send and receive email from the server via mutt but when i try to connect to IMAP via Thunderbird for example, ...
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320 views

postfix opendkim DKIM-Signature and Domainkey-Signature

Running postfix on CentOS 6 as an edge relay for a while now, so all our outgoing mail is routed through one point with opendkim signing the mail. This works great. I was originally using ...
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0answers
147 views

Virtualmin configuration disable all email send and receive

We have a server (Ubuntu 12.04) that we use mostly for development purposes. There are about 50 vHosts created in Virtualmin that I would like to completely disable the ability to send email. Under ...
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0answers
99 views

Configure postfix to limit total number of connections from any and all SMTP clients in a given time period?

I am trying to figure how to configure Postfix to operate within the requirements given by Spamhaus for free usage of their DNSBLs (http://www.spamhaus.org/organization/dnsblusage/). They specify that ...
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0answers
168 views

Postfix + Amavisd-new as smtp-proxy (pre-queue) for inbound only, postqueue for outbound?

I am in the planning phase of building a mailserver with the following requirements relevant to my question: Use postfix, virtual users (two virtual domains) Must filter pre-queue to reject ...
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0answers
67 views

Google Apps MX for User Accounts, Custom Postfix for Sending only, same domain

I have a google apps business account which provides the use of gmail's mx servers. I would like to use this for users to send/receive email. However, I have a specific need to send bulk emails on a ...
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0answers
296 views

How to configure Postfix to use multiple IP aliases for sending out email?

Running Postfix on Linux. I know how to create IP aliases. I know how to create multiple smtp transports and bind them to various IPs: smtp_bind_address=X.Y.Z.Q I know how to assign a transport ...
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0answers
335 views

postfix: relay all mail to office365 server

I'm decommissioning an Exchange server and moving the mail accounts to Office365. However, some of the computers on my LAN generate email status messages. Previously those were delivered to my ...
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0answers
163 views

Postfix sending corrupt pdf attachments to exchange

We have a php web application that creates pdfs and send them to users , everything worked fine on a centos 5 with postfix 2.3 , we want to upgrade to centos 6 with postfix 2.6 . sending to gmail or ...
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0answers
164 views

Postfix - SASLAuthentication Problems Cram-MD5 with StartTLS

Recently I configured my mail server which uses Postfix and Courier. Everything works except for the authentication when sending mail via my Postfix server(running on port 587) which has StartTLS ...
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0answers
217 views

Postfix - redirect mail based on source server IP address

I have a test postfix (2.6.6) server configured to intercept all outbound emails and store them locally, so that the devs can test email functionality of client apps without spamming the world. The ...
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0answers
62 views

Filter mail sender PHP files

Is there a way to tell PHP which PHP files exactly are allowed to send emails? I would like to create a whitelist about these PHP files, and other PHP files would not be able to send emails at all. ...
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0answers
178 views

Postfix to Spamassassin on local host using public IP

I have 2 VPSes running Debian Squeeze. Both were set up pretty much identically. They are named Sam and Taz. Taz, as far as e-mail goes works almost perfectly. Sam has had issues. Originally I posted ...
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0answers
28 views

How to add postfix address that gets piped through script

I have a Debian server running postfix. In the file /etc/postfix/main.cf there is this line: mailbox_command_maps = pcre:/etc/postfix/mailbox-pcre The file /etc/postfix/mailbox-pcre contains lines ...
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663 views

Postfix not receiving external mail. Sending mail OK

I am having some issues setting up Postfix to receive mail on Centos. This is a web server that I'm setting up to only pipe mail to a php application so the server hostname is hostname.mydomain.com. ...
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194 views

postfix, dovecot, dovecot-sasl, ldap, and static UIDs for NFS-shared email storage

I'm trying to build a Ubuntu 12.04 mail server as such. Must: Auth against an existing Open-LDAP server. Storage in Maildirs on an existing NFS server, everything owned by 8:8 (mail:mail). Auth is ...
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144 views

multiple login credentials for same relayhost

i struggle with my postfix config. i want to use the same relayhost for my two domains, but i have different credentials on the relayhost. is there a way to tell postfix to use two different login ...
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0answers
139 views

PostFix not sending received emails to users correctly -> wrong directory

I'm trying to setup a mail server on Mac OS X Mountain Lion (10.8) Here's the thing: the emails do show up corrrectly in the .Sent Messages folders (when I send from one user to another in accounts ...
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166 views

Fetch all Mail from an IMAP server with Postfix to distribute on local IMAP server

The situation: The constellation: We have a managed, dedicated server from a professional provider. We currently have Tobit David.fx server in use within our local network which fetches all E-Mails ...