0
votes
1answer
21 views

Postfix on two servers. Can I route all mail though just one of them?

I have at least two web servers which utilise Postfix to send mail from web applications. One is what I call the 'master' which will remain static and the other is what I call the 'slave', which is ...
-1
votes
0answers
26 views

SMTP Postfix server probably used as a spam relay : how to protect? [duplicate]

I'm using my own mail server to send and receive emails : a Debian 6.0.7 running Postfix 2.7.1 and Courier. Today, I'm suspecting that this server is used as a SMTP relay for spammers... The clues are ...
2
votes
1answer
60 views

postfix transport relay access denied

When message arrives from other mail server (yahoo/gmail) on my postfix server it gets denied and not being transported using the transport on my configuration. Been checking whole day can't find ...
1
vote
0answers
28 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 . # ...
0
votes
1answer
105 views

Capture virtual vagrant server smtp on my actual computer

I'm running a number of virtual servers using vagrant on my computer. This is working well. I have installed Postfix to send SMTP inside these virtual servers. But what I want to do is have Postfix ...
1
vote
1answer
106 views

Dual delivery Google Apps and Postifx (server reject mail from my domain on google)

This is the scenario: I have a server with Postfix and some domains, and now, one of this domains want to use Gmail Google Apps only in a couple of accounts. The end-user configure the domain with ...
0
votes
0answers
40 views

Rely Access Denied From Gmail To Postfix

I setup Postfix/Devocot on my server. Every thing is going well. Email is perfectly send from postfix to gmail or other mail servers but when I test the email from gmail to my server gmail through and ...
0
votes
0answers
76 views

Postfix is ready for connection but does not send queue

Recently I've had problem with delivering outgoing mails through postfix. I use vps with postfix and dovecot generally as smtp server. It's very important to us emails to deliver email as stable as ...
0
votes
1answer
88 views

Postfix: mail delivered locally, but I wanted relayhost delivery

I work at example.net :-) and my team's server is named tardis.example.net . Any mail sent to us must first go through our company's internal relay hosts. Although the messages are delivered to our ...
0
votes
1answer
355 views

554 5.7.1 <mail_addr>: Relay access denied centos postfix

I have problem in send mail from postfix in centos I have following setup mail server postfix for sending mail but I am getting error. As in the link I tried following commands telnet localhost ...
0
votes
0answers
55 views

Postfix smarthost with diffent relayhosts and sender dependant authentication

I've setup postfix as smarthost with different relayhosts and sender dependant authentication. Everything works ok, but I have a performance question. Is it better to send all the email corresponding ...
0
votes
1answer
381 views

Postfix with relayhost - relay access denied for bounces

I have set up a Postfix Mailserver, outgoing mail is being sent through a smarthost/relayhost which requires authentification. That works great, internal clients can send to foreign recipients though ...
1
vote
2answers
912 views

Postfix relay host connection fails: timed out while receiving initial server greeting

I have an Elastix server box that I want to send email notifications of voice mails from. I'd like to send them through our company email (hosted by shared web host provider Bluehost). I have followed ...
0
votes
0answers
31 views

Postfix dosen't forward to Gmail Yahoo Hotmail

I have a problem with my Postfix 2.8.4 (Cent OS 6 with Plesk 11.0) If i sent an email to one of these providers, it will be delivered ok. If I setup my email to forward all emails to one of these ...
0
votes
1answer
96 views

Postfix: don't bounce for remote rejects

I'm having a problem with sending bounces to spammers when a remote "trusted" smtp server rejects a mail. My server manages mail for company1.com that has a virtual alias support@company1.com that ...
1
vote
2answers
213 views

Postfix - unable to access externally

So I can't seem to access smtp from externally. When using a desktop email client (eM client and thunderbird both fail) I can't get it to hit the server at all. (eM client is trying to hit: ...
2
votes
1answer
129 views

What's wrong here? Postfix secondary MX relay with redirection of specific email addresses

The primary mx server for my domain is down, and is likely to be down for a day or so. Meanwhile pressure is on to get sme high priority mail to people who need it. What I want to do is set up a ...
0
votes
2answers
1k views

How to configure postfix on Ubuntu to relay emails through Office 365 (SMTP) with TLS

I'm attempting to setup a postfix relay to our new Office365 setup for some internal devices on our network that require this specific setup. I've been trying various sites with configs and ...
0
votes
1answer
57 views

What postfix does if it is unable to deliver a message?

If I send a message from postfixA -> smartHost postfixB -> smartHost postfixC -> exchange and only postfixC does MX lookup and it is unable to deliver the message no matter if it is a hard ...
0
votes
1answer
96 views

Postfix - RBL check behind relayhost

We are running a mail server which is responsible for a sub-domain (say, dom1.example.com). All the mails sent from Internet are received through our relayhost (mail server responsible for ...
0
votes
1answer
163 views

How can I configure Postfix to ignore relayhost when forwarding mail?

How can I configure Postfix to ignore relayhost when forwarding mail? I currently use the relayhost to send all outgoing email via an external SMTP service : # /etc/postfix/main.cf relayhost = ...
0
votes
1answer
320 views

How to forward to dynamically determined addresses with Postfix?

Each message to a local user must go to an address that is obtained by running an external command. That command will look at the local address tag, make API calls to several processes, and then ...
1
vote
0answers
97 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 ...
1
vote
2answers
948 views

POSTFIX main.cf permission denied

I am trying to set up a postfix server for smtp relay. Centos 5.5 I have followed http://mhawthorne.net/posts/postfix-configuring-gmail-as-relay.html but am getting a FAILED error when trying to ...
0
votes
1answer
227 views

postfix relayhost 'Recipient is not recognized. Relay access denied'

im trying to get webmin postfix to send emails through my smtp account with another email provider (in this case lavabit.com) im getting the error 'Recipient is not recognized. Relay access ...
0
votes
1answer
123 views

Postfix - sender dependent configuration based on client IP instead of email address

Using Postfix, I want to setup the transport according to the sender IP. There is sender_dependent_default_transport_maps, which does it according to the sender email address (envelope MAIL FROM). ...
1
vote
0answers
76 views

Postfix sometimes ignore sasl_passwd

I have a server (server1) configured to use a relayhost (server2), with a specific username and password. server2 is another of my servers. server1 configuration: /etc/postfix/main.cf: relayhost = ...
0
votes
1answer
501 views

Postfix: Relay access denied through SASL with permit_sasl_authenticated setted

Postfix 2.7 / Ubuntu 10.04 LTS when i try to send a mail from Outlook (with smtp auth) to a gmail account (or others), i get relay access denied. The log (i've faked the emails): Feb 24 16:49:16 ...
1
vote
1answer
108 views

Postfix changes to main.cf are not loaded

Ubuntu 10.04 LTS root@vm1613:/etc/postfix# vim /etc/postfix/main.cf [...] # default restrictions smtpd_sender_restrictions = check_sender_access hash:/var/spool/postfix/plesk/blacklists, ...
0
votes
1answer
479 views

Telnet to SMTP gets no 220 response unless user is specified

My server is setup to generate outgoing email only (no receiving), and is timing out when attempting to contact smtp.foo.com Essentially the email is generated by a process on myserver.foo.com, sent ...
0
votes
1answer
91 views

Possible spam emails from our server but not from our domains

I encountered something weird with my mail server. For about 3 days now I am noticing that my mail server sending emails that aren't included in my domains. There are from different IPs different mail ...
0
votes
0answers
2k views

554 Relay access denied

I set up a mailserver yesterday according to this tutorial: http://wiki.hetzner.de/index.php/DebianMailserver3 (tutorial is in german). Sending emails is working fine, recieving emails from other ...
0
votes
1answer
203 views

How to have Postfix send email to another server if user lookup fails for specific domains

Currently my server acts as a gateway, checks AD for valid email addresses, if the email address exists in exchange it sends over the email, otherwise just rejects (typical) I need Postfix to send ...
0
votes
1answer
110 views

Postfix Transport Not Getting Triggered

I have ServerA and ServerB - I'm moving accounts from A to B but I want ServerA to relay any mail it receives to ServerB to make sure no mail gets lost after I have copied mailboxes over while DNS ...
0
votes
1answer
257 views

postfix 550 relay not permitted for virtual mailbox domain

When somebody sends mail to myvirtualdomain.com I get the message Remote host said: 550 relay not permitted! [RCPT_TO] What is wrong with my settings? I do not think the problem is in the mysql ...
1
vote
2answers
128 views

Postifx: how can someone send e-mail without authorization with this configuration?

Yesterday I found that 10 thousand e-mail messages were sent through my system using this configuration: http://pastebin.com/bThpH1s8 - main.cf http://pastebin.com/kkxxsstP - master.cf I temporarily ...
1
vote
5answers
297 views

Best Practices for Open Relay Email Server

I have a scenario where I need to setup postfix with no TLS, no SMTP authentication, and open relay allowing from only one remote IP address. Emails from this remote IP may have spoofed "from" address ...
2
votes
1answer
1k views

Postfix stop outgoing delivery but accept all incoming

I'm doing development for a webapp that sends emails out to users. I've typically used Argosoft Mail Server (Freeware) in a windows environment as an SMTP server in which I've enabled relay but ...
1
vote
0answers
141 views

Postfix: Modify sender address based on recipient

We have a Postfix server that receives mail from our application servers. Senders are in the form user@host.fqdn (where host.fqdn can vary, depending on source server) and recipients can be internal ...
0
votes
1answer
1k views

POSTFIX bouncing when destination is my domain

I am using provider mail hosting to send emails. On my Webserver I also have Postfix running and configured. Here is my main.cf smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) biff = no ...
1
vote
1answer
225 views

Postfix mail gateway/relay for limited domains

I have a number of servers at a hosting space. What is the best way or is it possible to run a relay on one of the system to send all emails to alerts@myowndomain.com to our email hosting service ? ...
2
votes
1answer
111 views

Postfix as a relay for specific networks only

I have a strange issue with postfix that is driving me a little up the wall as it seems to work 50% of the time but with no changes made. What I want to achieve: I have a number of virtual servers ...
0
votes
1answer
149 views

Postfix: Ignore relay host when from specific address

I configured my postfix server to relay all received mails to smtp.example.com with relayhost. This server doesn't accept mails from an external source. So only scripts are sending mails. Is it ...
0
votes
1answer
447 views

Postfix enable sending to any domain in the Internet with authentication but no SSL

When I try to send a mail by SMTP and Postfix I got a error "5.7.1 unable to relay". After lot of config changing it worked for me to send email to the same domain as server (to other accounts on ...
3
votes
1answer
269 views

Creating a “fake” open relay to capture non-relayable outgoing mail with postfix

We occasionally have customer-provided servers in our technical support and engineering departments. They're isolated on their own VLAN, with strict firewall rules in place to minimize possible bad ...
0
votes
1answer
765 views

Cannot send email outside of network using Postfix

I've set up an Ubuntu server with Request Tracker following this guide (the section about inbound mail would be relevant). However, while I'm able to send mail to other users within the ...
1
vote
2answers
1k views

postfix and iRedMail- Relaying Denied

I am trying to setup iRedMail and am way over my head here. I have installed it, and can send emails internally, but not externally. When I send an email from outside, I get the following return ...
0
votes
2answers
2k views

Allow receiving and sending of local mail, disable remote relay on postfix

I just installed mutt and postfix on my server and I've been playing around with it. Now, however, I want to make sure that no one can remotely send mail with my server as a SMTP relay. I don't know ...
2
votes
3answers
1k views

Ubuntu Postfix Gmail SMTP Relay Not Working

I currently have postfix set up to relay messages from my websites through gmail, and up until recently it was working perfectly. However, within the last week or so (not really sure when) I started ...
0
votes
1answer
283 views

postfix specify limited relay domain while allowing sasl-auth relay

I'm trying to set up postfix to allow relaying under a limited set of conditions: The destination domain is one of a pre-defined list -or- The client successfully logs in Here's the relevant bits ...