provided by Star2Billing S.L.

Hello everyone,

Please, I need your help... I have email problem with my A2billing server that is costing me both money and customers. Every time my A2billing server generates email to a customers with Yahoo, Gmail, or Hotmail accounts (during account signup or for any other reason), the email gets flagged as spam and sent to spam folder. However, when I send email to the same customers from Outlook client through the same server, the email is not flagged as spam and is delivered to the customer's inbox.

I am running Postfix on my server and everything appears to be configured correctly. I suspect this issue might have to do with PHPMailer in A2billing server, but I have no clue on how to resolve it as I have very limited programming skills. Any help or suggestions will be very greatly appreciated.

Thank you so much in advance!
kamakor

Hi

Different mail servers, such as Google, hotmail, etc have a Spam scoring system, which consists of looking at elements of the email, including the text of the mail, and doing a reverse lookup on the domain name the the email purports to come from.

The more elements there are that are suspicious, then the greater likelihood the mail will be marked as Spam.

A quick google threw up the link below, and I'm sure some more googling will throw up more.

http://www.webhostingtalk.com/showthread.php?t=931932

Joe

Thank you Joe. Following the suggestion in the article in the link you provided, I have created an SPF record for my domain, yet the emails continue to be flagged as spam. Any additional suggestions from anyone on the forum will be appreciated as I really need a fix for this problem.

Many thanks!
kamakor

Hi

Maybe there is something in the text of your emails that flags as Spam, try changing the text and see what happens.

Additionally, your IP, or range of IP addresses may be black listed through no fault of your own, possibly from a neighbouring server. You may be able to do some googling on that.

Joe

Thank you so much, Joe.

I have changed the text and even removed our website url in the email. I also verified that none of our IP addresses is blacklisted, yet I get the same result. I suspect this issue could be with the PHPMailer, perhaps the content format. Not sure how to change it from html to plain text to see if it makes a difference.

Interestingly, when I look at the email header I see this entry: X-YahooFilteredBulk: 68.x.x.x. I'm not sure what that means in the overall scheme of things. Below is a sample email header to a yahoo recipient:
-----------------------------------------

X-Apparently-To: [email protected] via 206.190.48.251; Fri, 14 May 2010 13:31:52 -0700
Return-Path: <[email protected]>
X-YahooFilteredBulk: 68.x.x.x
X-YMailISG: oLnuTegWLDucvYdlyoFaE4Z4SMxVrOnMmg6pEWoG2h7hQYhEnxalB3b_cN98EesH5PFt_.Ns3bBWCiE4f1eLxk_NLkKq7l6Ta_iV.AG8o0egXsRs9fyuzNPoDAgzb.oaGQfoZFox98vkFT4TH8q0OrH6vV0TF38p8r08IZIrIjLtb7XlrHKE5J7rihLBT510jJQ78AGTbu9VKI2xoe2VasfdaS3GSygPOK5Qi49t1Laxn3bRgNuKPykKiX8j9DRHusXPXYCODhouPyJcm9NHOTwYkpZKzybkirh3i1ldeio.CLtDIUO04190F0q4H1VAjw--
X-Originating-IP: [68.x.x.x]
Authentication-Results: mta1096.mail.re4.yahoo.com from=mydomain.com; domainkeys=neutral (no sig); from=mydomain.com; dkim=neutral (no sig)
Received: from 127.0.0.1 (EHLO mail.mydomain.com) (68.x.x.x) by mta1096.mail.re4.yahoo.com with SMTP; Fri, 14 May 2010 13:31:52 -0700
Received: from localhost (a2billing.local [127.0.0.1]) by mail.mydomain.com (Postfix) with ESMTP id 203562DA82A7 for <[email protected]>; Fri, 14 May 2010 16:31:52 -0400 (EDT)
X-Virus-Scanned: amavisd-new at mydomain.com
Received: from mail.mydomain.com ([127.0.0.1]) by localhost (mail.mydomain.com [127.0.0.1]) (amavisd-new, port 10024) with LMTP id VmFlHi0znlmM for <[email protected]>; Fri, 14 May 2010 16:31:51 -0400 (EDT)
Received: from www.mydomain.com (a2billing.local [127.0.0.1]) by mail.mydomain.com (Postfix) with ESMTP id 7818C2DA829A for <[email protected]>; Fri, 14 May 2010 16:31:51 -0400 (EDT)
Date: Fri, 14 May 2010 16:31:51 -0400
To: [email protected]
From: Customer Support <[email protected]> Add sender to Contacts
Subject: Forgot Your Password?
Message-ID: <[email protected]>
X-Priority: 3
X-Mailer: PHPMailer 5.0.0 (phpmailer.codeworxtech.com)
MIME-Version: 1.0
Content-Type: multipart/alternative; boundary="b1_796110bbf2b4610631b6e911027d83e0"
Content-Length: 751

Hi

Can I take it that you have sanitised your header, and your return address really is not [email protected]?

Joe

Yes, I sanitized the header.

i experienced a similar issue and removed the x-priority added by a2b in the header of the email. that seemed to make the trick for me. don't recall if i also removed x-mailer too, you could try as well.

Hi Blusky,

I have removed x-priority and x-mailer lines but my emails are still going to spam folder. I am assuming this modification will be to 'class.phpmailer.php' file, right?

Thanks a bunch!
ken

hi kamakor - i don't recall exactly where (it's been a while) but you can check for changes on the email headers.

I also ended up implementing DKIM-Signature and DomainKeys, and I think that also helped too. Take a look here: http://en.wikipedia.org/wiki/DKIM

Cheers.