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1answer
18 views

Postfix relaying to local instead of relayhost

I am trying a simple postfix relay of emails via an SMTP server. But I see from the logs that the mails are relayed to local and not to the relay host. The main.cf configurations are below, ...
0
votes
1answer
53 views

Postfix a lot of relay acces denied errors in maillog

I'm on Centos 6.5 with Postfix/Dovecot and some virtual domains. Postfix works fine, but I've got a lot of messages like this "NOQUEUE: reject: RCPT from 1-160-127-12.dynamic.hinet.net[1.160.127.12]: ...
2
votes
3answers
167 views

DHCP Relay vs Multi-Homed DHCP Server

I'm sketching out a new network topology and I'm unsure of how to solve the issue of DHCP between two VLANs. 10.50.2.0/23 will hold the majority of our users, corporate wifi, printers etc. ...
2
votes
1answer
198 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 ...
0
votes
0answers
38 views

Need to setup an intermediary to accept, alter and resend a UDP packet

Currently ApplicationA on ServerA sends a UDP packet to ApplicationZ on ServerZ several times throughout the day based on several triggers. The problem is that some of the data in that packet is sent ...
0
votes
1answer
34 views

How to use services secured by our gateway IP from clients outside our network?

I work for an organization that uses a managed host for App1 and a collection of apps, App2..N App1 is a web application, hosted on a linux webfarm by a large vendor - and it uses a forms-like ...
0
votes
0answers
106 views

Postfix Rackspace setup with SPF record always go to SPAM (neutral)

after a lot of fighting with the system I would like to know your guys opinion and solution. Idea is to have 1 mail server (centos postfix) at rackspace and have all the other cloud servers relay to ...
0
votes
0answers
55 views

Postfix: Server to Server encrypted communication

I just built a Postfix, Dovecot and Spamassassin (ClamAV + Amavis) stack on my dedicated server. In the last two years I was using iredmail, wich was OK, but I was a bit sceptical because of my lack ...
1
vote
2answers
88 views

stop postfix relay from internal network

I'm using Postfix 2.7.1 (can't change to a newer version for the moment) and it's running fine, with the exception that is allowing to relay mail from the internal network even if the specified sender ...
1
vote
2answers
487 views

Sendmail: Mails are still being relayed to root@localhost

I am running CENTOS 6.2 with 2 virtual machines one 'auth'(192.168.0.2) and another proxy (192.168.0.3). Proxy has no internet connection. My intention is for proxy to send its mail to auth and auth ...
0
votes
1answer
226 views

Using sendmail to forward to one sendmail server and sending mail from that server

I am using linux with centos 6.2 distribution. I have 2 VM running these distributions. One VM is named 'proxy' and the other 'auth'. Have sendmail installed on both. Proxy does not have an ...
2
votes
1answer
667 views

Zimbra MTA settings

Hi have some questions for Zimbra v8.0.6GA. Under Configure -> MTA -> Network, I'm seeing a few settings and am not very clear what to do with them. Web mail MTA Host name Is this for delivering ...
0
votes
1answer
195 views

Postfix relay mails from a single domain and IP

we have an Mdaemon server which redirects outbound mails to an external basic Postfix relayer. We have configured firewall rules (in front of postfix server) to accept smtp requests only from the ...
-3
votes
1answer
149 views

How to configure sendmail to use different SMTP relay servers [closed]

How to configure sendmail to use different SMTP relay servers. For example: For all gmail.com recipients sendmail should use gmail SMTP server obviously with Gmail smtp auth. For all yahoo.com ...
0
votes
1answer
271 views

Postfix not accepting relay from localhost

Postfix does not seem to want to accept relay from the local machine, despite mynetworks_style=host. Here's (trimmed) mail.log output from debug_peer_list: postfix/smtpd[23247]: resolve_clnt: `' ...
1
vote
2answers
262 views

Postfix: Transport Maps via Third-Party Relay Host

I have my website and email hosted with a shared host. Unfortunately their servers are using CPanel, so they are limited in their spam protection options. I also have a VPS that I use for testing ...
-1
votes
1answer
90 views

Trouble configuring sendmail to relay mail [duplicate]

I am trying to configure sendmail and ufw on an ubuntu server (ServerA) so that another server (ServerB) can send mail through it. In my /etc/mail/access file I have the following line (a.b.c.d is the ...
0
votes
0answers
153 views

Forwarding unknown Postfix users to another SMTP host

We are migrating a bunch of users to a new mail server. At the same time we are migrating each user to a new LDAP server. When we create the user entity in the new LDAP tree, we also create the new ...
1
vote
2answers
114 views

Two servers, one is a Postfix relay of the other, can I divert root emails from the other?

So, I have two servers, I will call then Internal and External. When I send emails within Internal postfix, it gets relayed by External which does the job of actually sending the email. Normal relay, ...
0
votes
0answers
64 views

Own relay server using VPN

I have following setup: Server (NATed) connected via VPN to public relay server. There are many of these servers and all have an own VPN connection to the relay server. A client (mobile, NATed) sends ...
0
votes
0answers
47 views

Postfix config to allow Out-of-office, but not User-not-known

I need our postfix relay to be able to send Out-of-office-replies but not User-not-known bounce messages... both come from "<>" - but the User-not-known ones contain text we could match. Currently ...
0
votes
1answer
512 views

554 5.7.1 Relay access denied iredmail

I have the feeling the answer to this may be obvious but my head is pickled with this. setting up a mail thing on ubuntu 13.04 with postfix,iredmail,mysql and that. Getting this in the logs when I try ...
1
vote
1answer
69 views

How can I relay mail to multiple SMTP servers?

We want to use Google Apps for Domains as our email service but the "corporate" office want's the emails in Exchange. I would like to set up a relay (is that the proper term) to send any incoming ...
0
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0answers
81 views

Netcat relay issues

I have a legacy database application that can be accessed via ODBC on port 3000. I have set up a simple netcat relay on a bastion host so that this ODBC access can be done via the bastion host: ...
1
vote
1answer
100 views

Relay HTTP request through other servers and back

I have 6 Ubuntu cloud servers, which of one acts as a main Django deployment with an intranet and cronjobs. For the cronjobs I request data from different data-sources, that I want to go through the ...
1
vote
2answers
198 views

Grant relay to servers based on AD security group membership

We're moving our relay from an Exchange 2003 server to an Exchange 2010 server. I was hoping the "Grant or deny relay permissions to specific users or groups" option would still be available in some ...
0
votes
1answer
140 views

“Wrong” from name when sending mail through (smtp) Exchange 2003 from RT/Debian internally, ok externally

I think this is really simple to solve but I just need some input to get my brain working again. Followed this guide to set up RT on Debian: http://burn.co.nz/blog/?p=54 To explain the issue plain ...
1
vote
1answer
163 views

Redundant mailservers. Route messages from internal users to secondary site

I have 2 mailservers running ZIMBRA (primary - site1) and (secondary - site2) in two separated locations (sites). When my primary mailserver in AVAILABLE the seconray are just syncing (rsync) with ...
3
votes
2answers
324 views

Intermediate SMTP server (exim), how to handle backscatter?

I have a dedicated Ubuntu Lucid box at a hosting provider that is my backup MX (running exim4 4.71-3ubuntu1.4) for domains that I have configured on an Exchange 2007 server on my LAN. So my Exim ...
0
votes
1answer
591 views

sm-mta strange outgoing messages

I noticed something weird today on my mail server. I had a message in my inbox that said: Received: from myserver.com (localhost) by myserver.com (8.14.3/8.14.3/Debian-9.2ubuntu1) id ...
0
votes
1answer
86 views

can Dovecot be used for relaying mail for user like a gateway?

I want to setup a gateway mailserver for relaying intranet users' incoming and outgoing email. I've setup postfix for relaying mail, but I dont know if dovecot can do this. e.g. Dovecot as gateway, ...
1
vote
0answers
409 views

ubuntu 12.4 relay access denied postfix

I have been reading all relay access denied in this forum with no luck. Most of those issue have to do with some other packages that work with postfix. I hope you can help me here since this may be a ...
0
votes
2answers
252 views

postfix bounce configuration

What I have is: Windows server generating emails with own app and sending them to relay server (2) - this works fine Relay server that sends emails received from (1) - CentOS - working fine What I ...
0
votes
1answer
168 views

Apache Module to hold connections | backend to DMZ - DMZ to backend

I'm looking for an Apache module or plugin which offers me the following functionality. I have an Architecture which includes the following components: Internet: mobile device External Firewall ...
0
votes
1answer
557 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 ...
0
votes
2answers
301 views

How to catch or filter specific sender or recipient

I have a bit of problem and I am pretty new in this field and I don't know how to set this. I have searched somewhere on the internet how to solve this but I don't really get all this stuff about ...
0
votes
1answer
247 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 ...
2
votes
1answer
939 views

Exim Prevent Mail Sent by Relay

Currently it appears that somehow someone is using my server to send spam as I'm seeing 100's of rejection emails from other email services (such as gmail) saying the message could not be delivered ...
2
votes
1answer
734 views

Relay Access Denied (State 13) Postfix + Dovecot + Mysql

So we have been scratching our heads for quite some time over this relay issue that has presented itself since we re-built our mail-server after a failed Webmin update. We are running Debian Karmic ...
2
votes
2answers
582 views

How to configure postfix to permit relaying from some ip address but only using one domain as sender

I was looking for this but I can't find any thing. I want to permit one ip address to relay mails by my servers but only using one domain as sender. Can I ? If yes, how. I use postfix 2.9.4. Sorry my ...
0
votes
3answers
1k views

Postfix : relay access denied

Since I can't find a solution that works with my config, I lean on you guys to help me out with this. I've installed postfix and dovecot on a CentOS server. Everything's running well. But when I try ...
1
vote
1answer
161 views

How to redirect external web request to localhost's testing server

Some web services calls my web application(www.myapplication.com/external_update_handler). I need to test those requests locally, so I'd like to know your opinions about how can I "redirect" those ...
1
vote
1answer
177 views

openvpn& iptables — portforwarding and gateway

The problem is similar to this scenario: iptables rule still take effect after deleted Scenario: There are several clients(C1~C10) providing some services, such as SSH,HTTP..... The clients are ...
2
votes
1answer
345 views

Queue bounced emails using Postfix with an SMTP relay

I have setup a Postfix mail server that use a relay mail server to deliver the emails. The problem I am having is that from time to time the relay server goes crazy and block my relay ...
3
votes
3answers
455 views

Relay access denied

In 2008 I set up a simple mail server (running ubuntu 8.04 LTS) to allow local automation controllers to send email alarms without limits. I used to use gmx, but found that if an account had a ton of ...
0
votes
1answer
72 views

Email “relay forwarding” through Google

I currently attend a University that is in the process of swithcing all faculty accounts to Google, in spite of the privacy issues relating to research and international contacts. The current ...
1
vote
1answer
190 views

Need an open SMTP relay for testing

I'm developing some HTML email templates and have a internal test tool that can send out test emails to my own email address for QA purposes. Unfortunately this tool's settings page allows the mail ...
2
votes
1answer
287 views

How can I set Qmail to relay all mail to one address

I'm new to qmail it's setup and working like it should. I need to set it to do something a bit different. I need it to take all mail that would be incoming to it and relay all of that to one address ...
1
vote
1answer
375 views

Conditionnal relay in postfix

I use postfix to send direct email. But, I use a relay to send email for specific senders. So I use "sender_dependent_relayhost_maps" : /etc/postfix/main.cf : relayhost = transport_maps = ...
1
vote
1answer
987 views

postfix 5.7.1 Relay access denied when sending mail with cron

Reluctant to ask because there is so much here about 'postfix relay access denied' but I cannot find my case: I use php (Zend Framework) to send emails outside my network using the Google mail server ...