Free and open source mail transfer agent (MTA) that routes and delivers email. When asking about postfix problem, please include the relevant maillog lines and output of the following command: "postconf -n" (content of main.cf) and/or "postconf -M" (content of master.cf)

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3
votes
0answers
25 views

Roundcube sends e-mails without subject

I have recently set up a mail server that consists of postfix and dovecot. Yesterday I added nginx and roundcube to the mix. SPF, DKIM, DMARC, rDNS records are all done. Gmail treats my mail as valid ...
2
votes
0answers
63 views

Prevent postfix appending search domain

I have postfix running on OpenBSD, and I'm having trouble with it appending a search domain when none is configured in either postfix or the local DNS server (dnsmasq). My domain has a wildcard CNAME ...
2
votes
0answers
58 views

Spamassassin not respecting my blacklist

I've tried putting my blacklist_from and whitelist_from lines in ~/.spamassassin/user_prefs and in /etc/spamassassin/local.cf, but they appear to be ignored. This is from postfix's master.cf: smtp ...
2
votes
0answers
414 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 ...
2
votes
0answers
138 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
votes
0answers
966 views

Rewriting sender address based on the recipient

I'm trying to set up my postfix server to alter the sender address of outgoing e-mails for one specific recipient domain (example.com) -- otherwise I'd just configure smtp_generic_maps in main.cf and ...
2
votes
0answers
2k views

Postfix: How to configure Postfix with virtual Dovecot mailboxes?

I have configured a Postfix mail server for two domains: domain1.com and domain2.com. In my configuration domain1 has both virtual users with Maildirs and aliases to forward mail to local users (eg. ...
1
vote
0answers
17 views

Applying filter on mail from specific subnet in postfix

I'm trying to get the following to work: We have a postfix relay on the edge of our network, accepting all mail from our internal LAN & DMZ. What we are trying to get to work is limiting the ...
1
vote
0answers
37 views

Postfix not following MX, local delivery LDAP

Before explaining the problem, this is the setup: We run 5 servers, 2 in Montevideo [Uruguay], 3 in the US, on each server we have clients (domains, mail accounts, and obviously local logins) the LDAP ...
1
vote
0answers
49 views

Windows 8.1 Mail Client Sending via Postfix

I have a postfix server setup to accept outgoing mail from STMP authenticated clients. It has been working this way for many years with success for a large number of different e-mail clients. ...
1
vote
0answers
155 views

Postfix + Saslauthd + Kerberos 5 + CentOS 7 not working

I've almost got saslauthd checking against Kerberos but seeing some last issues on CentOS 7. When postfix talks to saslauthd, it sends a lowercased domain and it's not corrected. I tried to fix things ...
1
vote
0answers
70 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 ...
1
vote
0answers
129 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 ...
1
vote
0answers
128 views

Postfix mailbox_command + netcat + nodejs

I use Node.js script to process incoming emails and pipe them from Postfix via netcat in mailbox_command (namely: nc 127.0.0.1 3002). Node is listening on port 3002 and calls socket.destroy() once ...
1
vote
0answers
127 views

squirrelmail postfixadmin plugin - failed login to xmlrpc instance

Hi, I have installed postfixadmin 2.3.6 and im using squirrelmail vacation plugin. Postfixadmin is working good i can add/edit/delete email accounts and vacation or forwards / aliases. I have ...
1
vote
0answers
189 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 ...
1
vote
0answers
220 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 ...
1
vote
0answers
369 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 ...
1
vote
0answers
198 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 ...
1
vote
0answers
79 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 ...
1
vote
0answers
415 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 ...
1
vote
0answers
202 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 ...
1
vote
0answers
63 views

Forward copy of mail to different domain

Is it possible in post-fix to forward an Mail send from particular user From: abc@example.com TO:anyuser@ourcompany.com should forward copy of email to other user at external domain ...
1
vote
0answers
231 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 ...
1
vote
0answers
232 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 ...
1
vote
0answers
90 views

Check Exchange Quota Usage from Postfix / Prevent Backscatter With Postfix+Exchange

we have some troubles with our Mailsystems at the moment. We have an postfix server, handling all incoming mails and forward them to the correct internal mailsystem. This works well with the most unix ...
1
vote
0answers
672 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 ...
0
votes
0answers
2 views

Setting up High Performance SMTP to send 300,000 mails daily

I'm working on a project for a salesforce app for a 15 years old portal with a massive user base of around 3 Million subscribers and growing. The App sends our around 10,000 to 30,000 Transactional ...
0
votes
0answers
13 views

Exchange with Postfix MX for technical accounts in same DOMAIN

I have organization configured with Exchange 2007 server with many technical accounts. I would like to migrate technical account to Postfix server with same domain At the moment my structure is: ...
0
votes
0answers
72 views

postfix with dovecot : fatal: no SASL authentication mechanisms

I setup a mail server using postfix and dovecot . I used pro linux system administration book by James Turnbull, but I got following error when try to test mail server with swaks command. swaks -tls ...
0
votes
0answers
42 views

Mailserver stop receiving email dovecot log is missing suddenly

i have problem with my mailserver. in some randomly time my email in roundcube cannot receive email and i check in the log file /var/log/maillog Feb 1 10:00:51 ns1 postfix/pipe[20605]: 37CA81848A7: ...
0
votes
0answers
38 views

How to fix Postfix init script on Ubuntu 14 so it can stop the Postfix it started

I'm on Ubuntu 14 Installed via sudo apt-get install postfix service postfix start works fine and even does something useful But: $ service postfix restart * Stopping Postfix Mail Transport Agent ...
0
votes
0answers
23 views

Sympa suddenly changed the domain of all lists

we have on our server sympa with postfix installed. Everything was working fine for about 6 months. On our server were about 100 lists with the format listname@foobar.de Since yesterday the format of ...
0
votes
0answers
124 views

postfix always_BCC mail system configuration error

I'm trying to setup always_bcc to an archive account in order to copy all inbound and outbound mail into a mailbox that can be sucked up by a third-party cloud archive solution. Outbound, works fine, ...
0
votes
0answers
81 views

How to integrate spamassassin to work with squirrelmail?

I have recently configured, postfix/dovecot/squirrelmail and installed AMAVIS, CLAMAV, SPAMASSASSIN .Im trying to check spam system is working by sending a plain text email with the following string ...
0
votes
0answers
93 views

Postfix server rejecting sender address

I installed a mailserver (postfix / dovecot) on my Debian Wheezy system and cannot send mails. Since I just want to administer a mail server and don't have a domain yet, I'm working with the external ...
0
votes
0answers
73 views

how to route all php script emails through postfix

I have a plesk server with 1000 domains. customers send lot of spam from scripts, which i cannot block. so i want to route their php scripts or all emails from every scripts, to be passed/routed ...
0
votes
0answers
220 views

Create Public/Shared Mailbox on OS X Server 10.9.5 with Dovecot 2.2.5

how can I create a Public/Shared Mailbox on OS X Server? This Mailbox should be available to all authenticated Users on my network and should be automatically subscribed into a folder "Public" in the ...
0
votes
0answers
259 views

How to exempt localhost from SMTP smart relay?

I've got a mail server (mail.mydomain.com) that has a relay set up as such: /etc/postfix/main.cf: # Smarthost relayhost = [smtpcorp.com]:2525 smtp_sasl_password_maps = ...
0
votes
0answers
79 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
votes
0answers
69 views

Postfix+DKIM using Amazon's second private IP address

I use Amazon EC2 with 2 private IPs. I have 2 postfix instances (using multi-instance builtin support) with opendkim. Each instance works when I send email (over telnet) using the primary private IP ...
0
votes
0answers
142 views

Postfix, schedule batches of email to be sent

Is it possible to have postfix limit the amount of emails it sends at once and when there is larger than x email, send them out in timed batches (wait 5 minutes, send another 50, something like that)? ...
0
votes
0answers
165 views

Collectd / Tail Plugin for Postfix shows Incorrect Numbers

I am using collectd 5.4.0 with CGP 0.4.1 on a freshly installed Ubuntu 14.04 LTS. All default settings work as expected and charts are being generated. To track Mails being sent from the Server, in ...
0
votes
0answers
144 views

maildrop and quota exceeded

I implemented warning maildrop when quota exceeded. This worked correctly except for one detail. The drawback is that sending mail notice is sent only time... I mean for example if the mailbox has ...
0
votes
0answers
88 views

postfix smarthost mixed with usage of external mailserver

In a SOHO setup I've got a mailserver with fetchmail, dovecot, roundcube and postfix running. Fetchmail fetches the mails from the isp, postfix and dovecot handle the rest. Postifx sends emails in a ...
0
votes
0answers
726 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 ...
0
votes
0answers
22 views

Is there finer rate control for Postfix, e.g. 2/second?

I have managed to tune down postfix sending to one every second or one every five seconds. There's also an option to send only two or three concurrently. Is there any way to send two every second or ...
0
votes
0answers
206 views

postfix master dead but subsys locked but working

postfix master dead but subsys locked I tried removing the files on /var/lock/subsys/ and restarted postfix, no error on logs and mail is working but when I check the postfix status it still says ...
0
votes
0answers
35 views

Let Postfix show the appropiate SSL Certificate for a variety of host names

i bought an SSL Certificate for domain host.domain.com so my GNU/Linux mail server can deal with secure connections appropriately. That's ok while clients connect to host.domain.com but when they ...
0
votes
0answers
122 views

SASLAUTH: Temporary block on more than 5 authentication followed failures

I'm running a Postfix MTA together to SASL when it comes to authentication. Yesterday saslauthd collapsed and none of the email users could login to the mail server. What i think is probably ...