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• Something is spamming from my hMail server - how can I deal with this?

  - by joshcomley

  My Windows 2008 server is attempting to send out a lot of spam, I've just discovered, and I'm not sure how to see where the compromise is. For example: has someone hacked an account? Has someone hacked the server? Is there a virus on the server? What can I do to investigate this? Edit Thanks for the replies so far. I am running hMail server, and have spent so long investigating the correct configuration but still I end up with these emails being sent. Here is a screenshot of my Internet IP range settings on the server: (let me know what else I can provide to help)

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• E-mails sent with postfix are marked as spam.

  - by unkown

  I am using gmail as my email provider, and I only have gmail servers for my mx records. I don't like the 500 message per day cap. To address this issue I would like to run postfix on my Linux machine to only send email, port 25 blocked by my firewall. I can send email, however google marks all messages sent with postfix as SPAM. How do I make sure that people know email sent with postfix is valid?

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• sendmail: Transport endpoint is not connected

  - by david

  A few days ago my mail server (fedora 10, running sendmail 8.14.3) started getting "Transport endpoint is not connected" messages in the log. It seems to be happening for bigger mail hosts (hotmail, gmail, aol, etc). The errors started happening about the same time I upgraded clamav ... so I just tried downgrading clamav to the previous version, but the error keeps happening. I was dubious anyways ... why a milter would effect sendmail's ability to connect with a remote server was beyond me. If I force the mail queue's to run, the messages are delivered normally. I had this happen once before ... and I thought it was related to a milter I had configured but wasn't using ... but that milter is not in use at all now. Any suggestions?

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• "Could not open connection to the host" error when trying to send email using telnet

  - by hima

  I need to send email from my ASP.NET application. For that I am using the following command from the command prompt to connect to the specific port on tk2smtp: telnet tk2smtp.msn.com 25 But it's showing the following error on the command prompt: Could not open connection to the host I installed a telnet client in my machine. Let me know if there are any other things to be configured for this.

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• How can I configure Windows Server 2008/IIS 7 to send email via an asp.net web application?

  - by Steve French

  I recently moved a long-functioning web app from a Windows 2003 server to a windows 2008 server. Everything works fine, save for the email service (send password and the like). The code works on my local machine and the original web server. The system throws no errors, but the message stays endlessly in the Queue. I have granted full access to all relevant users (Network Service, IISUsers, etc). Is there something I'm missing, or does IIS7 just not send email via web applications?

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

  - by thiesdiggity

  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 main server is mail.example.com and we have a Exchange server setup to receive emails from exchange.example.com. We have the MX records setup in our DNS and it receives correctly if we send from a GMail account. However, when we try to send an email from a @example.com account we get the following error: Host or domain name not found. Name service error for name=exchange.example.com type=A: Host not found I believe Postfix checks for local mailboxes first and if its setup with the domain it delivers to the local account, but in this case the sub-domain accounts are located in another server. Anyone have any thoughts on what I need to do within Postfix so it doesn't look locally for the exchange.example.com mailboxes? I found relay_domains directive within Postfix but that doesn't seem to fix it when I add the sub-domain. Thanks for your help.

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• Exchange and external mail server

  - by Bahrain Admin

  Hi, We have our domain hosted externally with Network Solutions, and our mail server is running from there. We have a branch office in Bahrain and have 3 users who would like to use their email addresses on a local exchange server running at the Bahrain office. The Exchange server is currently only used for internal mail,contacts and calendaring. I've used a third=party program to download the POP3 mail to their exchange accounts. so they can receive mail from outside. The issue is in sending mail using their external addresses. I've setup their exchange accounts to include their external address. But we get an error message stating that the IP is not authorized. I tried putting the local ISP as the smart host, but then we get an error message stating that the Address was rejected. I tried using our own external mail server as the smart host, but then the message "Relaying is denied" comes up. Any suggestions? Thanks Arun

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• Do you know a script for email round trip monitoring?

  - by crazyfr

  Do you know a simple script that can do email round trip monitoring ? I want to monitor email service on A. I install the script on B. B sends an email to A A sends an auto-reply to B B knows that email service is working well. B restarts this test every 30min. If B didn't received replies, it sends an alert message. B could also monitor round-trip delay of emails. I have not access to the email service, I can only ask new end user email and configure auto-reply. B is an Ubuntu. Thanks!

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• exim sending mail to wrong mail server

  - by Chris Bull

  I have recently taken over management of a server running centos and whm. It has several websites and domains running under reseller accounts. Email has always been on a server at our actual office. I have recently changed our email from our local email server to gapps for business (our local email server was pretty archaic). However, when any email is sent from the web server (such as wordpress etc) to our domain - it still routes it to the IP of our old email server. I am not very familiar with WHM or exim so don't really know how to address this. Email to other domains works fine and the gapps is working perfectly. Any help is much appreciated.

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• using gmail as your email hosting provider?

  - by ajsie

  i've got a external domain and i want gmail to handle all the incoming emails. i know that its free for me to let gmail handle all the outgoing mails, since you can add your external domain in their settings. but how incoming mails? is it free or do i have to use their google apps for business?

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• Is there a way to have Microsoft Exchange server override the from field in outgoing mail?

  - by mic.sca

  I need to know if it's possible on an exchange server to filter outgoing mail and override the from address in certain cases. We have to set up many exhange users who will only be able to access exchange through the outlook web access. All their outgoing e-mails when received from recipients outside our company should appear to be sent from a single generic address and not from the users' addresses. Anyone knows whether this is possible or not? thank you, Michele

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• Postfix smarthost with diffent relayhosts and sender dependant authentication

  - by mattinsalto

  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 to a domain through only one account? I mean, now I'm sending each message authenticating to the relay host with the sender credentials. Example: If I have 5 email accounts and I send 10 simultaneous messages from each account, How many times is postfix login to the relay host if I have sender dependant authentication? 5 times? once for each sender 50 times? once for each message If I send all the messages corresponding to one realy host through one account, how many times does postfix login to the relay host? only once? Thanks in advance.

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• Something is spamming from my hMail server - how can I deal with this?

  - by joshcomley

  My Windows 2008 server is attempting to send out a lot of spam, I've just discovered, and I'm not sure how to see where the compromise is. For example: has someone hacked an account? Has someone hacked the server? Is there a virus on the server? What can I do to investigate this? Edit Thanks for the replies so far. I am running hMail server, and have spent so long investigating the correct configuration but still I end up with these emails being sent. Here is a screenshot of my Internet IP range settings on the server: (let me know what else I can provide to help)

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• Cannot send email from EC2 instance on port 587

  - by Tahsin Mostafiz

  I have written a mail service for our flask application that uses Celery and RabbitMQ to send emails (using gmail). I have got the celery consumer and producer communicating okay but I cannot get to send send emails. I am getting a socket.error: [Errno 101] Network is unreachable. I think this means that AWS is blocking port 587 - even though in my security group I opened both ports 587 and 25 (inbound and outbound). Any reason why this is happening? Any help will be highly appreciated.

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• Is it possible to cause email to my domain to be handled by gmail?

  - by pitosalas

  [This is a very narrow question, and I don't think it is covered in similar sounding questions] I want to configure my server's DNS so that when someone sends email to [email protected] it is actually deliver it to [email protected] Note: My question is whether this is possible to do ONLY with DNS not with myserver.com's own sendmail. I think the answer is "NO" it is not possible, because when I add an MX record to DNS the email that was delivered to gmail's SMPT server would be TO: [email protected] and it would not know that account. (But I hasten to add that I am just vaguely starting to grok how this all works.)

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• Are two periods allowed in the local-part of an email address?

  - by Mike B

  A third-party email gateway relay is refusing to process a message for an email address we're sending to. The address is in the format of [email protected] (note the two periods). Is this allowed by RFC guidelines? RFC 2822 seems to object to this in section 3.4.1: The locally interpreted string is either a quoted-string or a dot-atom. If the string can be represented as a dot-atom (that is, it contains no characters other than atext characters or "." surrounded by atext characters), then the dot-atom form SHOULD be used and the quoted-string form SHOULD NOT be used. Comments and folding white space SHOULD NOT be used around the "@" in the addr-spec. Furthermore, in that same section, it references this: addr-spec = local-part "@" domain local-part = dot-atom / quoted-string / obs-local-part I interpret this to mean that the localpart can have content separated by dots but there cannot be two successive dots, and it cannot start or end with a dot. That being said, I'm not familiar with dot-atom syntax so maybe I'm mistaken here. Can someone please confirm and explain?

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• Sendmail : ignore local delivery

  - by Derek Organ

  I've a Ubuntu webserver with Sendmail as my MTA Currently when i email outside my webserver's domain e.g. example.com to something like gmail or any other email outside the example.com domain it works perfectly. I don't want my sendmail daemon to recognize example.com as a local address I want it to send to example.com the same way any other email is sent. There will never be a case were i will use the local users on the webserver to collect these emails for example.com. So how can I disable local delivery?

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• Postfix $smtpd_banner rules

  - by horen

  For monitoring purposes I would like to add the IP address to the Postfix smtpd_banner: smtpd_banner = $myhostname ESMTP $smtp_bind_address which works and outputs: 220 mail.mydomain.com ESMTP 123.456.789.0 Now I am wondering if there are any (negative) repercussions to expect. I couldn't find anything about it in the RFC docs. The Postfix docs add another parameter ($mail_name) in their example, so I think I am fine. I just want to verify that my syntax is correct and is allowed.

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• SMail configure listening port/address?

  - by Lichtamberg

  Hello, I try to configure my smail-system. I want it to listen only on localhost/127.0.0.1 But when I check my system via nmap myredirectingdomainname.com it shows me the open port 25. Can you help me?

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• how to trace an outlook mail not arriving to its destination when is sent to another domain?

  - by Alex. S.

  Hi, I have an domain account configured with Ipower.com. If I use an email client such as Evolution, the mails arrive as expected. However if I use Outlook 2007 (as everybody in this company) the mails only arrive if the destination belongs to the same domain. That means when the destination is a gmail address, for example, the test email falls into a sort of black hole... This is just a simple ipower setup, nothing of Exchange or something like that. What else can I do to isolate and fix this issue? This is driving me nuts because in other email client with the same exact configuration in the same machine, everything works well and I need to fix the thing in Outlook.

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• c# how to add smtp hotmail account to send mail

  - by leventkalayz

  I wrote some codes so as to send e mail but I can only send mail from gmail account to gmail account also, I want to use hotmail accounts how can i do it? thanks It is SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com"); mail.From = new MailAddress("[email protected]"); mail.To.Add("[email protected]"); mail.Subject = "Test Mail - 1"; mail.IsBodyHtml = true; string htmlBody; htmlBody = "Write some HTML code here"; mail.Body = htmlBody; SmtpServer.Port = 587; SmtpServer.Credentials = new System.Net.NetworkCredential("[email protected]", "mypassword"); SmtpServer.EnableSsl = true; SmtpServer.Send(mail);

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• Prevent log4net to send duplicate issues via SMTP

  - by jrEwing

  Hi, we have bridged our log4net with Jira using SMTP. Now we are worried that since the site is public what could happen to the Jira server if we get alot of issues in the production environment. We have already filtered on Critical and Fatal, but we want to see either some acumulator service on log4net or a plain filter which identifies repeating issues and prevents them from being sent via Email. Preferably without having to change the error reporting code, so a config solution would be best. I guess dumping the log into a db and then create a separate listener some smart code would be a (pricy) alternative.

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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 header are attached. The different seems that Debian has this additional (envelope tag) and (from) tag other than some minor syntax differences. Any help to resolve is appreciated. The IP address and DNS is masked as follow: 1.2.3.4 = My IP address smtp.host.com = external smtp host for my company [email protected] = account at smtp host centos.abc.com = Local centos server debian.abc.com = Local debian server Thanks. Centos main.cf config with the following params configured myhostname = centos.abc.com mydomain = abc.com myorigin = centos.abc.com relayhost = smtp.host.com Centos - User receiving mail header Return-Path: <[email protected]> Received: from 1.2.3.4 [1.2.3.4] by smtp.host.com with SMTP; Thu, 27 Sep 2012 13:36:49 +0800 Received: by centos.abc.com (Postfix, from userid 0) id 1E0637B89; Fri, 28 Sep 2012 13:36:39 +0800 (SGT) Return-Path: <[email protected]> Received: from 1.2.3.4 [1.2.3.4] by smtp.host.com with SMTP; Thu, 27 Sep 2012 13:36:49 +0800 Received: by centos.abc.com (Postfix, from userid 0) id 1E0637B89; Fri, 28 Sep 2012 13:36:39 +0800 (SGT) Date: Fri, 28 Sep 2012 13:36:39 +0800 To: [email protected] Subject: Test mail from centos User-Agent: Heirloom mailx 12.4 7/29/08 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-Id: <[email protected]> From: [email protected] (root) X-SmarterMail-TotalSpamWeight: 0 X-Antivirus: avast! (VPS 120926-1, 27/09/2012), Inbound message X-Antivirus-Status: Clean http://i.imgur.com/7WAYX.jpg Debain exim4 config .... # This is a Debian specific file dc_eximconfig_configtype='smarthost' dc_other_hostnames='debian.abc.com' dc_local_interfaces='127.0.0.1 ; ::1' dc_readhost='debian.abc.com' dc_relay_domains='smtp.host.com' dc_minimaldns='false' dc_relay_nets='127.0.0.1' dc_smarthost='smtp.host.com' CFILEMODE='644' dc_use_split_config='false' dc_hide_mailname='true' dc_mailname_in_oh='true' dc_localdelivery='mail_spool' debian - User receiving mail header Return-Path: <[email protected]> Received: from 1.2.3.4 [1.2.3.4] by smtp.host.com with SMTP; Thu, 27 Sep 2012 15:02:53 +0800 Received: from root by debian.abc.com with local (Exim 4.72) (envelope-from <[email protected]>) id 1TH86d-00010v-G9 for [email protected]; Thu, 27 Sep 2012 15:01:55 +0800 Return-Path: <[email protected]> Received: from 1.2.3.4 [1.2.3.4] by smtp.host.com with SMTP; Thu, 27 Sep 2012 15:02:53 +0800 Received: from root by debian.abc.com with local (Exim 4.72) (envelope-from <[email protected]>) id 1TH86d-00010v-G9 for [email protected]; Thu, 27 Sep 2012 15:01:55 +0800 Date: Thu, 27 Sep 2012 15:01:55 +0800 Message-Id: <[email protected]> To: [email protected] Subject: Test from debian From: root <[email protected]> X-SmarterMail-TotalSpamWeight: 0 X-Antivirus: avast! (VPS 120926-1, 27/09/2012), Inbound message X-Antivirus-Status: Clean http://imgur.com/nMsMA.jpg

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• Tiny, very-basic outgoing MTA?

  - by Xeoncross

  I am looking for a very tiny Mail-Transfer-Agent (MTA) for my smaller VPS which only need to send emails for new accounts or notifications. Originally, I used PHP sockets and wrote a 4kb STMP class to connect to google SMTP and send the emails - but I would like to be free of the 500 emails a day (or whatever) limit they have. On larger VPS I can run Postfix - but it takes about 50MB which makes it too big for a 128/256MB VPS. So are there any very tiny MTA's out there - or is there a rundown of the protocol of sending email (I guess it works by forwarding the mail through other servers till it reaches the correct end mail server right?) so I could build a smaller bash or PHP script for this outgoing stuff?

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• Verify mail server connection programmatically in ColdFusion

  - by Sergii

  I'm using custom SMTP servers and would like to verify the connection when user enters his own server credentials. Exactly the same type of check as Adobe CF and Railo allow to do when adding mail server. Sure, this does not guarantee that delivery will be working, but at least to check that entered server/username/pass are valid. I can see one tricky way: try to send the email with cfmail and check the mail log. But I believe that it can be done with more elegant. Is there any Java library available with standard ACF/Railo distro to help me? How would I use them? Examples are highly appreciated. Thanks in advance. EDIT: Please don't be confused with Java tag present. Solution needed in CFML. Though it can use some Java libraries, if applicable.

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