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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2
votes
0answers
21 views

Add a custom header to Postfix with the relayed domain

I've got a Postfix setup that allows relays only from certain domains. I accomplish this using the relay_domains flag in main.cf and it queries mysql to find the list of allowed domains. ...
2
votes
0answers
115 views

postfix vs dovecot: SASL fails “authentication failed: Connection lost to authentication server”

I am trying to set up an email server that authenticates against an Active Directory server. I have successfully set up Postfix and Dovecot so that I can receive, read and send email for all accounts ...
2
votes
0answers
62 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
515 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
151 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
1k 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 ...
1
vote
0answers
13 views

How to make Postfix SMTP TLS Optional?

Just did an [emergency] conversion from qmail to postfix last night - but now I'm getting people complaining that mail client errors are showing up stating "no available encryption methods available" ...
1
vote
0answers
19 views

mail command always pointing to root's file

I am trying to configure a postfix mail server. Mails for the root are accessible. But while checking the mail for non root users, I get the following error /var/spool/mail/root: Permission ...
1
vote
0answers
19 views

Spamassassin (possible) Systemd Error

I am getting an error when trying to start spamassassin (for my postfix server). I think this error might be related to systemd as it worked before I installed the patch (I think). I followed the ...
1
vote
0answers
89 views

opendkim fail | bad RSA signature | verification failed unprotected key

I have fully manageable VPS running Ubuntu 14.04 which hosts websites for several domains. Recently I have tried to add DKIM signatures to avoid spam filters. I've followed ubuntu-postfix-dkim ...
1
vote
0answers
51 views

Postfix aliases only work from local users

I just setup a Postfix instance and added a few names to /etc/aliases. For example, take this: root: toor, nobody foo: root, root@gmail.com foo2: foo, example@example.com I ran newaliases ...
1
vote
0answers
117 views

Postfix on server with multiple IP addresses sends mails with wrong HELO in header

I have a VPS with multiple IP addresses: venet0:0 x.x.x.2 venet0:1 x.x.x.3 venet0:2 x.x.x.4 venet0:3 x.x.x.5 All IPs have A records m2.domain.com -> x.x.x.2 m3.domain.com -> x.x.x.3 ...
1
vote
0answers
61 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
225 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
83 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
155 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
146 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
213 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
238 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
396 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
222 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
85 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
469 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
228 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
70 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
255 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
96 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
685 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
14 views

Postfix/Dovecot multiple authentication backends

I trying to configure multiple sources on a postfix/dove server of all these: virtual_alias_maps = ldap:/etc/postfix/valiases.cf,ldap:/etc/postfix/useraliases.cf,ldap:/etc/postfix/groupaliases.cf ...
0
votes
0answers
16 views

Where to define proper domain name for postfix?

I ran into disorientation with my mailman setup, or more specificly the postfix part. I get confirmation mails when creating lists. But when I write e-mails to lists, I receive: Host or domain name ...
0
votes
0answers
31 views

Postfix RBL lookup fails to trap all connections for a listed IP address

Our mail server is getting large amounts of spam from net blocks assigned to Enzu Inc. We're running Postfix 2.6.6, configured to check spamhaus and barracuda RBLs. Here is the relevant part of my ...
0
votes
0answers
28 views

Posftix as relay - rewrite recipient in incoming messages

I have Postfix as MX server, receiving messages from the internet and forwarding them via LMTP to dovecot maiboxes. So recipients are specified in relay_domains relay_recipient_maps transport_maps ...
0
votes
0answers
60 views

How can I spam-filter outgoing email on a postfix server?

I'm in the process of setting up a solid mail system. It's my second time setting up something like this, so I already have a basic understanding of how to approach certain topics. I'm using postfix ...
0
votes
0answers
64 views

Hotmail SMTP cache?

So this is an odd one ... Does Hotmail in anyway resolve and cache information for MX records or A records for individual email addresses? For Example: I setup a personal test bed mail server and ...
0
votes
0answers
39 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
209 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
116 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
90 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
216 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
990 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
24 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
108 views

Change user for invocation of postfix transport script

I am trying to pipe emails received to a script for processing. I have a custom Postfix transport defined in master.cf, as per the following. transpire unix - n n - - ...
0
votes
0answers
269 views

Authentication problems with cyrus murder

I'm trying to use Cyrus Murder but I have an error which I fail to detect the cause. I have: 1 backend. 1 frontend that is also a mupdate. I have installed the Thunderbird 17.0.8 fronted to test. ...
0
votes
0answers
120 views

Change Posftix, from name

I'm setting up postfix to relay email through Gmail and have it working, but when an email is sent, the from name comes across as "root". I want to set it up so it comes across as "Test User". How ...
0
votes
0answers
75 views

postfix adding garbage characters in the mail

For my integration mail tests I am using Postfix as my SMTP server. My application is sending base64 encoded mail and when I receive it, looks like postfix is adding some random charters int the mail. ...
-1
votes
0answers
23 views

Apple Mail app causes SSL_accept error on postfix

I have set up an email server using dovecot+postfix and it's all working fine except for the outgoing mail sent by the OSX Mail app. In that case I get the following error: postfix/smtpd[16488]: ...
-1
votes
0answers
20 views

pflogsumm report shows a lot of deferred emails

Last two days I saw a similar pflogsumm report to this one: 54118 received 44212 delivered 2 forwarded 20029 deferred (124580 deferrals) 41004 bounced 104 rejected (0%) 0 reject ...
-1
votes
0answers
29 views

Configure postfix to accept SMTP connections from Gmail and relay email “Sent as”

I'm trying to configure postfix on Ubuntu 14.04 LTS to let SMTP clients connect to it via TLS over port 587, in order to enable the "Send mail as" feature in Gmail. The problem is that no matter what ...
-1
votes
0answers
44 views

How does Postfix work in a cloud environment?

I'm trying to figure out how should one configure a Postfix in a cloud environment! Consider the following diagram: My understanding of a cloud environment is that one should be able to easily ...
-1
votes
0answers
28 views

user unknown. Command output: ERR: authdaemon: s_connect() failed: Permission denied Invalid user specified

I have a debian server with Postfix+MySQL+Courier-IMAP+Maildrop+SpamAssassin. It was previously running squeeze, but I decided to dist-update it to wheezy. I kept all the exiting configs and didn't ...