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What is outbound spam filtering?

Outbound spam arises due to zombie computers, compromised accounts and legitimate spammer accounts. To protect our server's IP reputation which affects all customers who use our email service, we have outbound email filtering setup on every server. 

If your outbound message was detected as SPAM,  you will recieve the following error message: "550: This message was classified as SPAM and may not be delivered"

Our outbound SPAM filtering is a process where all outgoing emails will be checked as to the likelihood of the message being spam. It checks for multiple characteristics and assigns points for any it finds. If the email reaches a certain level, it is classified as SPAM and not allowed to leave the server. 

For details regarding your outbound message, you can check the score of your email by including the full headers at this link: http://spamcheck.postmarkapp.com/

There are many words or phrases that will trigger the spam filter. The ones listed below, if used, will cause your email’s spam score to increase by the evaluating software and may cause it to be classified as spam. Typically, using the phrase once in an email is safe, but repeating a phrase or using more than a couple of them can cause an issue. Please note, this is only part of the algorithm for identifying spam. 


Words that increase your spam rating in emails


Free leads

People just leave money laying around


Free membership

Please read

Accept credit cards

Free money

Potential earnings

Act now! Don’t hesitate!

Free offer

Print form signature

Additional income

Free preview

Print out and fax

Addresses on CD

Free priority mail

Produced and sent out

All natural

Free quote



Free sample

Promise you …!

Apply Online

Free trial

Pure profit

As seen on

Free website

Real thing

Auto email removal

Full refund

Refinance home

Avoid bankruptcy

Get It Now

Removal instructions

Be amazed

Get paid

Remove in quotes

Be your own boss

Get started now

Remove subject

Being a member

Gift certificate

Removes wrinkles

Big bucks

Great offer

Reply remove subject

Bill 1618


Requires initial investment

Billing address

Have you been turned down?

Reserves the right

Billion dollars

Join millions of Americans

Reverses aging

Brand new pager

Laser printer

Risk free

Bulk email

Limited time only

Round the world

Buy direct

Long distance phone offer

S 1618

Buying judgments

Lose weight spam

Safeguard notice

Cable converter

Lower interest rates

Satisfaction guaranteed

Call free

Lower monthly payment

Save $

Call now

Lowest price

Save big money

Calling creditors

Luxury car

Save up to

Can’t live without

Mail in order form

Score with babes

Cancel at any time

Marketing solutions

Section 301

Cannot be combined with any other offer

Mass email

See for yourself

Cash bonus

Meet singles

Sent in compliance


Member stuff

Serious cash


Message contains disclaimer

Serious only

Cell phone cancer scam


Shopping spree

Cents on the dollar

Money back

Sign up free today

Check or money order

Money making

Social security number

Click below

Month trial offer

Special promotion

Click here link

More Internet traffic

Stainless steel

Click to remove

Mortgage rates

Stock alert

Click to remove mailto

Multi level marketing

Stock disclaimer statement

Compare rates

Name brand

Stock pick

Compete for your business

New customers only

Stop snoring

Confidentially on all orders

New domain extensions

Strong buy



Stuff on sale

Consolidate debt and credit

No age restrictions

Subject to credit

Copy accurately

No catch

Supplies are limited

Copy DVDs

No claim forms

Take action now

Credit bureaus

No cost

Talks about hidden charges

Credit card offers

No credit check

Talks about prizes

Cures baldness

No disappointment

Tells you it’s an ad

Dear email

No experience

Terms and conditions

Dear friend

No fees

The best rates

Dear somebody

No gimmick

The following form

Different reply to

No inventory

They keep your money — no refund!

Dig up dirt on friends

No investment

They’re just giving it away

Direct email

No medical exams

This isn’t junk

Direct marketing

No middleman

This isn’t spam

Discusses search engine listings

No obligation

University diplomas

Do it today

No purchase necessary


Don’t delete

No questions asked

Unsecured credit/debt

Drastically reduced

No selling


Earn per week

No strings attached

US dollars

Easy terms

Not intended

Vacation offers

Eliminate bad credit

Off shore

Viagra and other drugs

Email harvest

Offer expires

Wants credit card

Email marketing

Offers coupon

We hate spam

Expect to earn

Offers extra cash

We honor all

Fantastic deal

Offers free (often stolen) passwords

Weekend getaway

Fast Viagra delivery

Once in lifetime

What are you waiting for?

Financial freedom

One hundred percent free

While supplies last

Find out anything

One hundred percent guaranteed

While you sleep

For free

One time mailing

Who really wins?

For instant access

Online biz opportunity

Why pay more?

For just $ (some amt)

Online pharmacy

Will not believe your eyes

Free access

Only $


Free cell phone



Free consultation

Opt in

Work at home

Free DVD

Order now

You are a winner

Free grant money

Order status

You have been selected

Free hosting

Orders shipped by priority mail

Your income

Free installation

Outstanding values


Free investment

Pennies a day



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