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1
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0answers
8 views

SBS/Exchange 2003 Open Relay on Malformed Email Address

I have a Small Business Server 2003 (Exchange 2003 SP2). During a PCI Compliance audit, it was flagged as failing the open relay. I've used telnet to test, and here is what I've found: MAIL FROM: ...
-3
votes
0answers
47 views

How does craigslist do the email obfuscation trick? [closed]

I want to set up a server so that I can not give out my real email to sketchy websites, kind of like a URL obfuscator for my email address. The server wants to do this: Receive a message to the fake ...
0
votes
1answer
38 views

Setup Postfix as a relay / filter

I need to have Postfix set up to work with Lamson. Despite my research on the web, i haven't figured out how to configure postfix. I'll have a server (A) that will forward all its email to a second ...
1
vote
1answer
20 views

Disable local recipient check in Postfix

I am trying to setup Postfix on CentOS. I have configured it to use my Google apps account to send mails. Lets say I have configured Postfix to use user1@mydomain.net, which is a Google apps email. I ...
0
votes
2answers
43 views

SMTP server force outbound traffic

I'm having some trouble with setting up a SMTP server on a windows server 2003 machine, while trying to send emails using PHP through the internet, but to domain email addresses. Common info: I'm a ...
0
votes
2answers
50 views

Setting up SMTP server (Windows 2008 R2) to use with Microsoft Data Protection Manager

DPM is installed on one of our servers - namely Datacenter. Essentially, there is no Exchange server in the domain, so we wanted to setup our own SMTP, and use a gMail account to forward ...
0
votes
0answers
22 views

exim greylisting non-auth SMTP mail?

I have smtp auth set up on my exim4 Dqueeze server so that only auth'ed clients can use it as a mail relay. I believe this is working, e.g. thunderbird (w/out password) reports that I am "not yet ...
1
vote
1answer
56 views

relay_domains seems to be ignored by postfix

I am trying to set up a perimeter spam and malware filter using CentOS/Postfix/SpamAssassin. Unfortunately, I am still stuck on the PostFix part. I've setup a new subdomain DNS with its own A/MX ...
1
vote
0answers
15 views

I need to set-up the blocked machine to relay to the unblocked machine using a different port

I have two Windows Server 2003 machines sitting in a network. Server B has port 25 open and can relay emails to the local network's smtp server. Server A does not have port 25 open. How can I set it ...
0
votes
0answers
52 views

server 2008 std sp2 - setting up smtp relay - mails queue then move to badmail

I am trying to set up a smtp relay on one of my domain controllers. The server runs server 2008 SP2. I tried to set this up forever ago and had to work on something else so now i'm back to hopefully ...
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votes
2answers
98 views

SMTP server on debian 6.0 linux

I have some questions: I am using a SMTP service for sending monthly newsletter for my website (~3000 email addresses). I was thinking: I already own a virtual server configured as a web server and ...
3
votes
3answers
125 views

How to force Windows Server 2008 R2's SMTP server to generate NDRs for non-existing local users?

I have a Windows Server 2008 R2 server with the SMTP service enabled, which provides mail relay to another server for some applications. Sometimes, a message comes in with a wrong "To:" address, ...
2
votes
1answer
125 views

Nginx Ubuntu Postfix Config - Can't connect to incoming IMAP server 'server not responding' but can send mail via outgoing using same details?

I'm pretty to new server admin and especially nginx but seem to be getting ok fine apart from accessing my mail via my iPhone? I've changed my domain to 'domain.com' The thing is I can send mail ...
0
votes
1answer
85 views

DKIM on postfix relay server

I have a postfix/amavis relay server, with the domain name mail.example.com. It will be a relay for dozens of VPSs, which will have domains like hostname.example.net. So i have actually two ...
2
votes
1answer
172 views

Exchange 2010 OWA send connector issue

I have problems sending emails outside organization using OWA (Exchange 2010 installed on SBS 2010, domain is domain.local, local DNS). Web-server and email server are hosted remotely, I am using pop ...
1
vote
1answer
38 views

SMTP relay restriction radio buttons disabled

I might just be doing something really dumb, but the two radio button options for my SMTP server relay restrictions are disabled and I have no idea why. I've included a screenshot below to help ...
0
votes
1answer
57 views

configure standard sendmail install to accept outside connections and forward mail to gmail account

I want to have some mail accounts on my domain (contact, webaster) redirected to my gmail account. In order to do this I installed sendmail. Default install (apt-get install sendmail on ubuntu ...
0
votes
1answer
108 views

New mail server can't send emails, only receives

I'm setting up a new mail server for my company with Ubuntu Server 11.04 and postfix/dovecot. I'm new on this so I have some problems. I'm getting it works only for receving mails from any address ...
-1
votes
1answer
87 views

Postfix “Relay access deined” error with Outlook

I am following this tutorial and finished the basic setup. I can login and send via squirrel mail and telnet but receive a "relay access denied" error in the logs when i try and send from Outlook. all ...
0
votes
1answer
100 views

Is there any risk to sending emails to accounts that no longer exist?

As mentioned in a previous question of mine, I send a lot of emails. I have calculated that approximately 2% of them are coming back to me immediately with the general text reading: 550-5.1.1 The ...
0
votes
1answer
284 views

Smtp-Relay in SBS 2011

How to configure outgoing mail in SBS 2011? I am using Thunderbird to open more then one IMAP mailbox, but when I want to send mails it appears that relay is not supported. If I configure one username ...
-1
votes
1answer
33 views

Inbound Mail relay

I'm trying to find a guide to setup a mail relay in my vps for my home mail server. What I'm trying to do is set it up so that my primary MX points to the VPS, with the home mail server as a ...
0
votes
5answers
441 views

How to find out that SMTP server is in open relay?

I used nmap for network security testing. It found that SMTP server was in open relay. Here is the output: nmap --script smtp-open-relay testwww.confidesk.com PORT STATE SERVICE 25/tcp open ...
0
votes
1answer
57 views

Proper configuration for Windows SMTP Virtual Server to only send email from localhost, and tracking down source of spam emails

We manage a server that is hosted on Amazon EC2, which has web applications that need to be able to send outgoing email. Recently we received a notice from Amazon about possible email abuse on that ...
1
vote
1answer
86 views

When is a mail relay needed?

Let me expand... I have a client who is unhappy with their current hosting situation. They want me to move their website and domain across to my hosting platform. I can do this. However I have ...
0
votes
0answers
85 views

Sending mail in localhost:25 with Ssmtp

I already have Ssmtp installed and working in a Centos 5.7 machine with Gmail configured. I can send mails in th shell without problems. Now i want to use the ssmtp to allow a web app (installed in ...
0
votes
1answer
82 views

Is there are postfix setting to disable prepending a sender path in the Received: header?

Currenty emails are sent/received as : Received: from localhost.localdomain (sender.host [xx.xx.xx.xx]) by smtp.host (Postfix) with ESMTP id 7F6CC67897 for <mail@example.com>; Thu, 19 ...
0
votes
1answer
105 views

Postfix connects to wrong relay?

I am trying to set up postfix on my ubuntu server in order to send emails via my isp's smtp server. I seem to have missed something because the mail.log tells me: Jan 19 11:23:11 mediaserver ...
1
vote
2answers
159 views

SMTP server currently an open relay

I'm using Postfix (2.3.3) on CentOS (5.7). Right now, my server seems to be acting like an open relay. If I specify a login, it works fine, both unsecured and with TLS (however TLS nags me about the ...
1
vote
1answer
143 views

SMTP delivery with multiple recipients

I'm going over some SMTP log files from an open relay server (IIS 6 SMTP Virtual Server), used to collect and route all automated email within a private network, to an internet smarthost (qmail at ...
1
vote
1answer
63 views

Qmail with AUTH CRAM-MD5

My Qmail install on Centos5 has CRAM-MD5 installed. I want to use this to an authenticated SMTP relay. Where do I specify the username and password details for QMail?
0
votes
1answer
104 views

relay mail from one postfix server to another

I'm attempting to use just 1 postfix instance to input ALL my outgoing mail. From there the goal is to relay it to my one of the many outbound postfix instances. I do this using round robin dns so it ...
0
votes
1answer
297 views

How to solve authentication error in sendmail relay through gmail [closed]

I followed the steps in http://www.linuxha.com/other/sendmail/gmail.html to setup gmail in send mail. But when I try to send mail I got the authentication failure message. —– Transcript of session ...
2
votes
3answers
466 views

How to get Postfix to send/forward/relay to a sub-domain located on another server?

I have a quick question. How do I setup postfix to send an email to another server (Exchange Server) when sending to an email address that has a sub-domain of our main server. For example, say our ...
0
votes
1answer
405 views

How to set exim4 to send email anywhere but only from authorised users?

Struggling to get my head around the various relaying controls in the exim4 config. I can send email from my server, I can send email from home and work (because I explicitly added suitable netblocks ...
-5
votes
1answer
207 views

What is the proper time delay between sending emails for smtp to not fail on windows server 2008 r2 [closed]

What is the proper time delay between sending emails for SMTP to not fail on Windows Server 2008 R2 machines? For example, if I set a 500ms delay, would it successfully send all emails? My software ...
1
vote
1answer
186 views

Exchange 2007 relay from sendmail, message “Undelivered”. Possible reasons?

Note: This is my re-post from Stackoverflow. I've been messing with a test environment for security purposes where a DMZ RHEL5 sendmail server is used as a relay for an Exchange 2007 server. ...
0
votes
2answers
253 views

How can email be resent that has been delivered to the Badmail folder in IIS?

We have IIS setup as an SMTP relay. A relay security error caused the outbound emails to be delivered to the badmail folder for the IIS SMTP Service. Is there any standard method for attempting to ...
0
votes
2answers
226 views

A flexible SMTP server that's open source or free

We currently have our own in-house email marketing software for our newsletters, and were using SQL server's SMTP agent to send emails through our local SMTP server (IIS) and then onto our ISP's SMTP ...
3
votes
1answer
319 views

Preventing email blasts with Exchange 2010 IP Throttling (or any other technology)

We need to slow down the rate email spam is sent through the Exchange system from our developers' buggy applications. How can I throttle email messages in Exchange 2010 by Source IP, or sender, so ...
0
votes
3answers
1k views

Google Apps as SMTP relay?

We have linked the domain of our company to Google Apps and we also have a Kerio Connect (mail server) installed in our company which uses Google as SMTP relay. As google requires SMTP authentication ...
5
votes
1answer
233 views

How can I configure Postfix to ignore relayhost for some domains?

Is there a way in Postfix to ignore the relayhost? I have something like relayhost = [smtp.domain.net]:587 Now for a certain domain I don't want to send it out to that relay but want it to just ...
0
votes
2answers
309 views

Sendmail relay authentication

I'm trying to set up my sendmail to authenticate against a relay (comcast). I'm not seeing any attempts to authenticate at all. I'm trying to just debug how authentication works, and can't connect all ...
1
vote
1answer
129 views

Mailx not sending emails

Using CentOS 5.6 and trying to send (only) emails to remote boxes. I am on a CentOS client box and trying to send email to my road-runner email account. mailx -s "Some Subject" me@tx.rr.com < ...
1
vote
0answers
54 views

IIS 6.0 and Virtual SMTP relay ~ some messages are bouncing

I will give a quick overview and then the details. I have a Exchange 2003 environment that I have been asked to slap on a disclaimer on all outgoing mail. So I have setup a Windows 2003 server and ...
-1
votes
1answer
164 views

550 Relay Denied in Xmail

I am running Xmail server in Windows 2003. When I took SMTP test at MxToolBox.com I am getting an error as 550 Relay Denied. How to fix this error? SMTPrelay.tab file contains the following. ...
1
vote
1answer
306 views

Set up SMTP server to add global signature to all emails from Google Apps for Business

We are using Google Apps for Business for our mail server, but require a global signature (simple HTML) to be appended to every message sent. This is not a feature of Google Apps, although it is ...
0
votes
2answers
236 views

DNS, SMTP Problem. Trying to send emails through PHP scripts using Gmail server

I have purchased a dedicated server some days ago and I think I don't have enough knowledge to configure its DNS etc. Well, I'll describe my situation. I have a dedicated server for virtualization, ...
0
votes
2answers
136 views

How to send email from non-TLS enabled client through TLS-only Gmail account

I need to be able to send email from a client (an OKI document scanner) which is non-TLS capable. But my company's email service is provided by Gmail-Google Apps, which is configured to force TLS ...
1
vote
1answer
474 views

detect malicious script used to send mail

i was recently used as an open relay and mass spam was sent through my server. i since then stopped it but my maillogs grow enourmously with this type of log. Aug 20 07:00:29 veepiz ...

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