Home ScamsPhishing Scams “Mailbox Exceeded the Quota Warning Threshold” Email Phishing Scam

“Mailbox Exceeded the Quota Warning Threshold” Email Phishing Scam

by Brett M. Christensen

Email purporting to be from the “Mail Help Desk” claims that your mailbox has exceeded the quota warning threshold specified by your administrator and you must therefore click a validate link to get more space and avoid account termination.

The email is not from any help desk or account administrator and the claim that your account has exceeded its storage limit is untrue.

The email is a phishing scam designed to steal your email account login details. If you click the link, you will be taken to a fake “Admin Server Portal” that asks you to supply your email address, username, and password. This information can be collected by criminals and used to hijack your email account.

The compromised account can then be used to send spam, scam, and malware messages in your name. “Exceeded quota” scam emails like this one are very common. If you receive such a message, do not click any links or open any attachments that it contains.

Subject: Problem from your email account.

Your mailbox has exceeded the quota warning threshold specified by your administrator.As soon as your account exceeds the allowable storage space you will be unable to receive any email.Current Usage:

12.44 MB
Quota Warning Threshold: 11.44 MB
Quota Size Limit: 14.06 MB

To resolve this issue and to avoid termination, Click Validate for more space by submitting the requested information.Mail Help Desk.

A screenshot of the scam website:

Admin Server Portal

Last updated: October 8, 2016
First published: October 8, 2016
By Brett M. Christensen
About Hoax-Slayer

Email Exceeded Storage Limit Phishing Scam
‘Re-Validate Your Mailbox’ Email Phishing Scam
PHISHING – AOL Mail ‘Exceeded Storage Limit’ Email


Importance Notice

After considerable thought and with an ache in my heart, I have decided that the time has come to close down the Hoax-Slayer website.

These days, the site does not generate enough revenue to cover expenses, and I do not have the financial resources to sustain it going forward.

Moreover, I now work long hours in a full-time and physically taxing job, so maintaining and managing the website and publishing new material has become difficult for me.

And finally, after 18 years of writing about scams and hoaxes, I feel that it is time for me to take my fingers off the keyboard and focus on other projects and pastimes.

When I first started Hoax-Slayer, I never dreamed that I would still be working on the project all these years later or that it would become such an important part of my life. It's been a fantastic and engaging experience and one that I will always treasure.

I hope that my work over the years has helped to make the Internet a little safer and thwarted the activities of at least a few scammers and malicious pranksters.

A Big Thank You

I would also like to thank all of those wonderful people who have supported the project by sharing information from the site, contributing examples of scams and hoaxes, offering suggestions, donating funds, or helping behind the scenes.

I would especially like to thank David White for his tireless contribution to the Hoax-Slayer Facebook Page over many years. David's support has been invaluable, and I can not thank him enough.

Closing Date

Hoax-Slayer will still be around for a few weeks while I wind things down. The site will go offline on May 31, 2021. While I will not be publishing any new posts, you can still access existing material on the site until the date of closure.

Thank you, one and all!

Brett Christensen,