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E-mails we send keep getting blocked or going to recipients spam folders

Posted on 2015-01-23
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Last Modified: 2015-01-30
Hello,

We have a rather strange issue which has just started happening in the last week. When we e-mail around 70% of our clients our e-mails either get blocked or go straight to the recipients spam folder. I have checked our domain and e-mail server IP on MXtoolbox and DNS stuff blacklists amongst other sites and we are not listed on. Any advice on this would be most appreciated.

Thanks
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Question by:purpleoak
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John Hurst earned 500 total points
ID: 40566429
checked our domain and e-mail server IP on MXtoolbox and DNS stuff blacklists

If all this is OK, then:

1. Your emails may be heavy on embedded graphics and then these to trigger anti spam filters.

2. Recipients ARE responsible for whitelisting your emails. Put whitelist instructions in the footer of the email so that recipients can follow up when they see your emails in their quarantine.
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by:rindi
ID: 40566590
Make sure your users always use a title for their mails, and that they don't use any of those common Spam words like pharmacy, drugs, etc.
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Expert Comment

by:gheist
ID: 40568592
Also make sure your mail server does not use any default hostnames in HELO, like exchange.local etc.
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Will my email signature work in Office 365?

You've built an email signature using raw HTML code in Office 365, but you can't review how it looks with Transport Rules. So you have to test it over and over again before it can be used. Isn't this a bit of a waste of your time? Wouldn't a WYSIWYG editor make it a lot easier?

 
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by:dsnegi_25dec
ID: 40568969
I believe DNS records were created properly.

Like :- PTR, TXT etc

Check  antivirus might be that is causing the issue.
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by:purpleoak
ID: 40579762
it was the signature that was the issue.
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by:John Hurst
ID: 40579785
@purpleoak  - Thanks for the update and I was happy to help.
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