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• Spam issues while using Postfix as a two-way relay

  - by BenGC

  I want to use a Postfix box to do two things: Relay mail from any host on the internet addressed to one of my domains to my Zimbra server Relay mail from my Zimbra server to any address on the internet. To try and accomplish this I have configured Postfix thusly: mynetworks = 127.0.0.0/8, zimbra_ip/32 myorigin = zimbra_server mydestination =…

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• Icinga notifications are being marked as spam when sent to my mailbox

  - by user784637

  I'm using gmail and my domain is foo.com About half the notifications from my icinga server, icinga@foo.com go to my spam folder for me@gmail.com Received-SPF: fail (google.com: domain of icinga@foo.com does not designate <ip6> as permitted sender) client-ip=<ip6>; Authentication-Results: mx.google.com; spf=hardfail…

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• Gmail flagging emails as spam despite SPF being enabled and working perfectly

  - by Asif

  I have a website where people can recommend contents to their friends using their email. The issue is that emails are being flagged as spam whereas if I do the same from my development machine things are working out fine. I have enabled SPF and it is perfect. When sending through website, the email appears as this in Gmail Inbox: From…

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• Preventing Email Spoofing

  - by DT

  I use Google Apps with my domain. Recently, we have begun to receive spam that gets past Google's spam filters. They are from our own email addresses. I am wondering how to prevent this kind of email spoofing. We use an SPF record with the "~all" setting. I'm wondering if I can upgrade that to "-all". However, Google Apps…

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• Exchange 2010 forwarded emails by external servers being blocked

  - by MadBoy

  Our users were getting spam messages from their own accounts (same domain/login for example madboy@company.com to madboy@company.com). This is preety standard trick and I decided to block it so that anonymous users can't send emails as @company.com. This brought some problems on us like our printers not being able to send…

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• Forwarding Emails From Inbox Only

  - by ircmaxell

  I have a forward setup on one of our public facing email addresses to a few users outside of our system (to an external address). Seeing as it's public (printed on a website in plain text), we get TONS of spam on that account. We're being marked as a SPAM source due to the forwarding by the external system. We have…

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• Thunderbird: filters don't match links

  - by Gregory MOUSSAT

  I use filters to remove some undesirable messages (in addition to the intergrated spam filter). This is great to avoid tons of boring people who want to sell me tons of boring stuff. My problem is, since years (so with every Thunderbird release I ever had, even the current one which is up to date) it is unable to…

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• Cisco Spam Blocker, Iron Port, Lotus Domino, Integration Help

  - by NickToyota

  Hi serverfault universe, I work for a medium sized (roughly 200 user) company. We are attempting to intagrate our new Cisco Spam Video Blocker (ironport) device into our network so that it acts as an incoming filter then passes it off to our Lotus domino mail server. And also vise versa. The way our network…

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• Cisco Spam Blocker, Iron Port, Lotus Domino, Integration Help

  - by NickToyota

  Hi serverfault universe, I work for a medium sized (roughly 200 user) company. We are attempting to intagrate our new Cisco Spam Video Blocker (ironport) device into our network so that it acts as an incoming filter then passes it off to our Lotus domino mail server. And also vise versa. The way our network…

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• Exchange 2010 sends out spam.

  - by Magnus Gladh

  Hi. I have an Exchange Server 2010, that uses a smart host to send out mails. A day ago the owner of smart host contact us and told us that we send out spam. I have try different open relay test on the net and all of them come back saying that this server is secured and can not be used as relay server. But I can…

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• Hotmail mail delivery issue (spam)

  - by chaochito

  Hello, I am running a Postfix server in a dedicated server in a Linux environment (centOS 5.3) for a social networking web application and are experiencing deliverability issues with Hotmail (I can send mails to Gmail, Yahoo, Aol in inbox). I only send legit mails for registered users (notifications). I have…

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• 5.5.0 smtp;554 transaction failed spam message not queued

  - by Miguel

  Some users are trying to send email to certain domains using Exchange Server 2003, but the message is always is rejected and the following message is shown: 5.5.0 smtp;554 Transaction Failed Spam Message not queued The IP is not in a black list (checked using http://whatismyipaddress.com/blacklist-check…

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• My mail going on spam from SMTP server

  - by user1767434

  I am trying to send a registration confirmation mail from my site to user who are registering from my site. my code is:- $drg_name = addslashes(trim($_POST['drg_name'])); $drg_surname = addslashes(trim($_POST['drg_surname'])); $drg_email = addslashes(trim($_POST['drg_email'])); …

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• Securing smtp with login

  - by Paul Peelen

  I have a ispconfig server, and it seems that someone is using it to send spam. I got about 130 "Mail Delivery System" email about declined send email. This spammer uses my email address as sent from adress, so I get all these email adresses to my mail. I am using Postfix and Courier. I installed my…

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• Email sent from Centos end up in user spam folder

  - by oObe

  I am facing this issue, I use the default postfix MTA in centos but the mail end up in user spam folder, but this does not seem to be a problem in Debian using exim4, both host have hostname and domain name configured, and relay mail through external smtp host. Both configuration and recieving email…

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• Preventing spam bots on site?

  - by Mike

  We're having an issue on one of our fairly large websites with spam bots. It appears the bots are creating user accounts and then posting journal entries which lead to various spam links. It appears they are bypassing our captcha somehow -- either it's been cracked or they're using another…

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• Postfix Whitelist before recipient restrictions

  - by GruffTech

  Alright. Some background. We have an anti-spam cluster trucking about 2-3 million emails per day, blocking somewhere in the range of 99% of spam email from our end users. The underlying SMTP server is Postfix 2.2.10. The "Frontline defense" before mail gets carted off to SpamAssassin/ClamAV/…

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• legit emails in junkbox

  - by acidzombie24

  Hey this is actually a reverse question. My personal email (firstname.lasname@gmail.com) is winding up in many peoples junkbox and I have no idea why. What may the cause be? Is it because it has the word Entrepreneur (and programmer) in my sig? is it because my first name is unique(european…

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• Postfix message ID originating process?

  - by Anders Braüner Nielsen

  Last night my postfix mail server(Debian Squeeze with dovecot, roundcube, opendkim and spamassassin enabled) started sending out spam from a single domain of mine like these: $cat mail.log|grep D6930B76EA9 Jul 31 23:50:09 myserver postfix/pickup[28675]: D6930B76EA9: uid=65534…

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• Why is it a bad idea to use a customer email as the from address

  - by Crab Bucket

  I've got an application that emails users once they have filled in a form. It uses a no-reply@customerdomain.com as a from address. The customer wants it to use the email from the form as the from address which could be anything. I have been told that this is a bad idea due to…

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• Security as a Service (SecaaS) for Amazon EC2

  - by Dave

  I'm looking for a security as a service (SecaaS) provider or open source solution for Amazon EC2 instances, however I can't seem to find much on Google or elsewhere so was wondering if anyone knows where I could find this service? Ideally I'm looking for something that offers…

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• Linux Exim set return-path header automaticly using from header

  - by solomongaby

  Hello, I use Exim on a Centos distribution and have some problems with the mail sending. In order to make all the email pass the spam filters the "Return-path" and "Sender" headers have to be attached to each email. What should I do in order to have "Return-path" and…

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• Config Server Firewall: Spamming my email | lfd on localhost: Suspicious process running under user www-data

  - by Henry Hoggard

  I have just installed and configured CSF and I am getting 100s of spam emails containing this message. lfd on localhost: Suspicious process running under user www-data Time: Wed May 23 01:05:52 2012 +0200 PID: 8503 Account: www-data Uptime: 118 seconds …

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• How do I do an exact whois search?

  - by brianegge

  When I execute the following whois command on my Ubuntu server, I get all sorts of other domains which contain google.com in the name, but clearly aren't owned by google. As this appears to be some sort of spam, I won't paste the output here. I'd like to check…

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• How do I check a reverse PTR record?

  - by Daisetsu

  I need to check a reverse PTR record to make sure that a script I have is sending emails which will actually received by my users and not incorrectly marked as spam. I understand that the ISP which owns the IP range has to set up the PTR record, but how do I…

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