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

learn more… | top users | synonyms

1
vote
1answer
16 views

Postfix + Php Mail() VS Postfix + SMTP

Most CMS (Joomla for example) comes with php mail() as default and has the option of changing it to SMTP if we want. I will be setting up both the webserver and mail server (Postfix) in the same VPS ...
0
votes
0answers
7 views

postfix relay emails dynamically

Is it possible to relay incoming emails dynamically with postfix's relayhost? relayhost = proxy:mysql:/etc/postfix/email2server.cf and I used mysql database to query each email with relay host. But ...
0
votes
0answers
9 views

CentOS 6.5, Postfix & OpenDKIM

I'm running: CentOS 6.5 Postfix 2.6.6 opendkim: OpenDKIM Filter v2.9.0 Compiled with OpenSSL 1.0.1e-fips 11 Feb 2013 SMFI_VERSION 0x1000001 libmilter version 1.0.1 Supported signing ...
0
votes
0answers
18 views

Postfix and “local mail”

That's the first time I'll configure a mail server. I explain you the complete picture. Currently, my company company.com has an ...
1
vote
1answer
28 views

Rewrite or change MAIL FROM:<> with postfix or mailman

I've got a problem with laposte.net free french email provider : since several weeks now, their smtp servers don't accept empty MAIL FROM anymore. Here is a sample telnet session : $ telnet ...
0
votes
2answers
17 views

Why does postfix on AWS give me “Invalid MAIL FROM address provided”? I have production access

I'm running the postfix mail server on my AWS box. My domain is mydomain.com. I have set up virtual mapping such that emails sent myuser@mydomain.com should be forwarded to target-user@gmail.com.com. ...
0
votes
1answer
49 views

Postfix - Relay all incoming mail to another host

I have 2 hosts, one is mail1.example.com The other is mail2.example.com Both servers have it own public ipv4 ips (But in different geo locations) Domain name has mail1 MX as mail server. I ...
1
vote
1answer
24 views

How to move properly from Postfix/Dovecot to Google Apps

here is the situation: we had a mail server configured within a VPS (using Postfix/Dovecot) with the mail for 1 domain being managed. We just moved the mail for that domain to Google Apps. The MX ...
1
vote
0answers
17 views

postfix disable blacklist checking for registered user

Many users has dynamic IP and sufficient number of these IP is blacklisted. How to disable check Postfix blacklist only for registered user? I want only block incoming mail from blacklisted IPS only. ...
0
votes
1answer
24 views

Which difference between /etc/aliases and virtual_alias_maps in Postfix?

Which difference between /etc/aliases and virtual_alias_maps in Postfix and where should I put aliases from local accounts to virtual user accounts (i.e. from root to postmaster@example.com)?
0
votes
1answer
29 views

Make Postfix accept all login credentials

I have setup a Postfix as a relay for an embedded device with a severely broken STMP implementation. Therefore I need to make Postfix to have AUTH enabled and to accept ANY combination of username and ...
0
votes
1answer
33 views

openssl s_client shows TLS working on ports 993,465, but mail clients time out on connection attempts

With the recent scares over POODLE, we have begun the process of changing everyone's connections to TLS, instead of SSL... While this process went smoothly for HTTPS, it seems that Dovecot & ...
1
vote
1answer
18 views

Clamav milter forward a copy of infected emails

I have a working postfix + clamav installation. How can I configure this to not just quarantene infected emails but if this happens also send a copy of the email to the sysadmins address? What I ...
0
votes
2answers
81 views

Scalable Multi Server E-mail setup using Linux/Dovecot

One of my clients ask me to set-up a multi server, scalable email system. I can configure multiple servers to send emails. By using PHP Mysql based login script, users will be redirected to each ...
1
vote
1answer
32 views

postfix/smtpd[1337]: warning: hostname example.com does not resolve to address 93.184.216.119

I am having trouble figureing out what exactly the following error message means. It pops up in the logs whenever a mailserver from 192.168.x.x address is pushing mails. postfix/smtpd[1337]: ...
3
votes
1answer
35 views

Postfix - forward rejected by unknown recepients emails to SPAM-learning mailbox

I have Postfix + BitDefender FRAMS running as hygiene gateway before few Exchanges. BD FRAMS can learn it's Baesian filter by download SPAM and HAM emails from dedicated mailboxes. Because we have ...
0
votes
1answer
28 views

Postfix to Postfix relaying

I've got a (possibly unusual) situation with using Postfix to relay mail to another Postfix mail server that then needs to send the email out. I've read plenty of tutorials and seen instructions for ...
1
vote
1answer
23 views

Postfix illegal address syntax

My postfix install is set up to forward all email going to example.com to my other mail server at mail.example.net. This works fine for all addresses except !@example.com -- the example.com server ...
0
votes
2answers
11 views

Postfix - mynetworks listing options

I am setting up Postfix to relay mail for our internal devices that do not support authentication. We will have a number of devices. Is there an easier way to list out devices vs. just listing them ...
2
votes
1answer
30 views

Continuously monitor the postfix Mailqueue (real time)

Is there a command to look at the Mailqueue of Postfix in real time. I know of the commands, postqueue -p and mailq. What I am looking for is real time monitoring of the queue. Similar to when i ...
0
votes
1answer
34 views

Postfix - receiving many “Undelivered Mail Returned to Sender”

I once set up my server using this guide (or a very similar one) But from time to time I have days or weeks of flooding "Undelivered Mail Returned to Sender" to my inbox. Oh and I am using catch-all ...
-2
votes
2answers
24 views

How to remove Postfix queue messages sent to a specific domain

I have a server with multiple domains. How can I clear all Postfix queue messages for a specific domain?
-1
votes
0answers
31 views

“user unknown” error when adding another virtual user [closed]

I followed an Ars Technica article on setting up my own email server on Ubuntu. So, admittedly I mostly blindly followed the tutorial and some of it I didn't understand as well as I should have. ...
-2
votes
0answers
46 views

Why does postfix give “lost connection after EHLO” error when Gmail tries to connect to my SMTP server? [on hold]

I'm trying to setup my gmail account so that I can send emails that appear to come from another email address I own (myuser@mydomain.com). Instructions to do so are here. When I try to do it, it ...
-3
votes
0answers
13 views

On AWS/Ubuntu how can I setup postfix email forwardin to gmail? [duplicate]

I have an AWS Ubuntu box. It's pointed to by mydomain.com. I have setup the A records and the MX records through Amazon Route 53. I have opened up incoming port #25 on this box and can connect to it ...
0
votes
2answers
73 views

Why can't I send/receive emails from AWS Ubuntu using Postfix?

I'm trying to send/receive emails on my AWS Ubuntu box. To do so, I'm following the instructions posted by Amazon here. (I skipped the section entitled "To configure integration using a secure ...
2
votes
2answers
52 views

can I add global alias in virtual_alias_maps but only for local domains?

I want to create a global alias for all my domains to catch all mail to addresses like postmaster@ I've added theses lines to aliases.pcre: /(MAILER-DAEMON|postmaster|abuse|webmaster)@(.*)$/ ...
-1
votes
0answers
21 views

Postfix Flagged For Spam

I run a small server for a few websites and last night if got flagged for rate limit spam from Google and my host blocked port 25 to prevent it. I've had a grep for some of the emails and whilst I ...
0
votes
0answers
28 views

`Sender address rejected: not owned by user` in Postfix

I am getting the following error when I try to send an email from a client on my home computer through my authenticated SMTP server, to receiver@gmail.com. Oct 17 09:21:40 debian postfix/smtpd[1643]: ...
1
vote
0answers
21 views

Mail has stopped working on Centos since instlling MailScanner

I have a VPS which I rent and it is running Centos 6. The VPS has ZPanel installed which is used to host some websites and emails. I have just installed Mailscanner and now, I have noticed that ...
0
votes
1answer
19 views

Sending mail with Postfix from multiple domains on the same server

I have a dedicated server with multiple Ruby on Rails apps on it. Each of these apps run on their own domain. When configuring Postfix there are parameters called "myhostname" and "mydomain". As far ...
0
votes
0answers
17 views

Postfix acts as sender for unathenticated connections on port 25 for $relay_domains

My postfix can be set as SMTP server on any email client, on port 25, no auth, to successfully deliver e-mail to any domain listed in $relay_domains. This is bad, and can be easily used to send spam ...
0
votes
1answer
35 views

Postfix on CentOS - Cannot receive emails

I'm trying with no success to setup Postfix on my server so I need some help (first timer here). Basically I cannot receive emails from anywhere. If I send an email to myself or to another address ...
-1
votes
0answers
22 views

Postfix - Use external SMTP, replace <from> field for certain destinations

I'm trying to get my Postfix to change the From address and use an external SMTP when emails contain certain domains in the to or cc fields. Anybody knows how to accomplish this? Thanks.
1
vote
1answer
36 views

Postfix sasl/tls username password ubuntu14.04 only sender [closed]

Anybody can suggest me a good tutorial to configure postfix as a secure smtp. I've installed it by this command sudo apt-get install mail-stack-delivery but I can't use it. In particular I haven't a ...
0
votes
0answers
18 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 ...
2
votes
1answer
25 views

Mails from relay server fails spf

An email sent by a server administered by me bounced back saying it failed the SPF check. Looking at the bounce message it had an IP different to that of the server sending the email. Then I found ...
-1
votes
1answer
18 views

Email forwarding?

I am not sure if this is possible, but please bare with me. I had a quick look around this morning, but as I wasn't sure what this was called or how to describe it thought it was best asking. We ...
0
votes
1answer
41 views

SMTP server, remove port 25 for relay communication

I have setup a SMTP server in my internal network, but I want to remove the port 25 completely since my service provider limits access to port 25. However, even using port 587 in my server to ...
0
votes
2answers
55 views

Mail don't reach server

I have VPS and serve several domains. DNS/MX config should be ok, as for *.com domains mails are both sent and received. Problem is with my country domain - *.hr (Croatia) - mails are sent, but ...
0
votes
0answers
20 views

Postfix not sending mail

I am trying to send a email from a PostFix server to an Microsoft exchange server. When the email is sent I am getting the following message. postfix/smtp[2860]: 4CC787FDE1: ...
0
votes
0answers
24 views

how to enable dovecot virtual mysql virtual users authentication together with system users authentication

I use postfix,dovecot and mysql installed my mail server on centos. It works fine for mysql virtual users but the system users can not be found for authentication. How can i let it if it can’t find ...
1
vote
0answers
54 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
votes
0answers
89 views

Can't receive mail, but can send mail? Centos 6 Postfix/Dovecot

I followed this tutorial to setup my webmail on CentOS 6: https://www.rosehosting.com/blog/mailserver-with-virtual-users-and-domains-using-postfix-and-dovecot-on-a-centos-6-vps/ Everything is setup ...
0
votes
1answer
38 views

Postfix as email forwarder to gmail, SPF problems

I'm trying to configure postfix as forwader to gmail. I've successfully onfigured the virtual aliases for the domains I'm hosting and that I want to redirect, but the Gmail SPF verification is failing ...
0
votes
1answer
27 views

Automatically defer certain messages in Postfix

Recently we've had a spate of "spear-phishing" attacks that many of our users have fallen for, and as a result our automated scripts are running at full steam locking accounts that have been ...
2
votes
1answer
37 views

Postfix/Dove copy incoming outgoing emails

I have to copy a mail account's incoming and sent mails to another mail account on the same server as well. How can I do this? The server is a debian wheezy running dovecot, roundcube and postfix. ...
-1
votes
1answer
34 views

Secure postfix smtp from spammer

I run on Centos 5 with Parallels Plesk 12 and look for to secure my smtp server. When I watch at log, I see some strange line like that, which I supposed it's hack connexion. Has someone any idea on ...
-3
votes
0answers
23 views

Ubuntu - Postfix & Dovecot - Messages not retrieved

Postfix is installed and cofigured for using virtual mailboxes. Everything seems working. From outside (me@gmail.com), I can send email to info@toto.be. Postfix log tells me message is received and ...
-3
votes
1answer
37 views

Mail spam by root and smmsp [closed]

Whenever I go to the mail queue log in the ISPConfig monitor section, I see approx. 300 hundred requests like the following: 482BDFEC0187 712 Thu Oct 9 09:39:01 smmsp@server.example.com (connect to ...