Flood of emails sent from my email address

Discussion regarding Joomla! 3.x security issues.

Moderators: Bernard T, mandville, fcoulter, General Support Moderators

Forum rules
Forum Rules
Absolute Beginner's Guide to Joomla! <-- please read before posting, this means YOU.
Forum Post Assistant / FPA - If you are serious about wanting help, you will use this tool to help you post.
Windows Defender SmartScreen Issues <-- please read this if using Windows 10.
Post Reply
Joomla! Fledgling
Joomla! Fledgling
Posts: 3
Joined: Wed Jun 08, 2016 10:07 pm

Flood of emails sent from my email address

Post by grantorino357 » Mon Jun 29, 2020 3:08 am

Hi everyone, as of a couple of days ago I have been inundated with emails that appear to be sent from my email address to me from someone somewhere in cyberspace. for example:

from: Web Designs Unlimited <info@webdesignsunlimited.biz>
reply-to: ccheor <schmaenderik@hotmail.de>
to: info@webdesignsunlimited.biz
date: Jun 28, 2020, 10:48 PM

What has been breached and what can I do to stop this?

Your assistance is appreciated.
Last edited by toivo on Mon Jun 29, 2020 4:28 am, edited 1 time in total.
Reason: mod note: retitled

User avatar
Joomla! Master
Joomla! Master
Posts: 22640
Joined: Thu Aug 18, 2005 8:55 pm
Location: Nijmegen, Netherlands

Re: Flood of emails sent from my email address

Post by pe7er » Mon Jun 29, 2020 6:59 am

You've to check the email header to see how the email has been sent.

If it was your own computer / server, then you have to secure it better.

If it was some random IP address that started it: it's easy to forge an email sender addresses.
Just like in the real world you would post an envelop and put someone else's address as sender.

In all cases you could take some anti spam measures using the DNS of your domain:
Kind Regards,
Peter Martin, Global Moderator
https://db8.nl - Joomla specialist, Nijmegen, Nederland
Co-developer of d2 Content https://data2site.com/joomla-extensions/d2-content

User avatar
Joomla! Master
Joomla! Master
Posts: 20144
Joined: Mon Aug 29, 2005 10:17 am
Location: Netherlands/ UK/ S'pore/Jakarta/ North America

Re: Flood of emails sent from my email address

Post by leolam » Mon Jun 29, 2020 3:36 pm

Joomla's #1 Professional Services Provider:
#Joomla Professional Support: https://gws-desk.com -
#Joomla Specialized Hosting Solutions: https://gws-host.com -
#Joomla Webmaster Services: gws-webmaster.services

Joomla! Apprentice
Joomla! Apprentice
Posts: 5
Joined: Wed Nov 25, 2015 3:30 am

Re: Flood of emails sent from my email address

Post by LarryK » Mon Jul 27, 2020 8:36 pm

I had a similar situation. I found out because there were 2,225 "Mail delivery failed: returning message to sender" emails in my Inbox this morning; about 2 per minute for a day.

They were sent to "John Q. Public" from my Joomla website. I determined it was from my Joomla website as the email header indicated the web host name. I went to my Global Configuration and turned the Send Mail to NO. That stopped it. Closer look at the header; the emails were bounced back from France, Germany and Denmark email addresses. Just imagine how many Spams were delivered successfully!

Now, I need to figure out how this occurred so I can stop this in the future. I've checked my User List and User Activity Logs, nothing unusual. Any suggestions???


Post Reply

Return to “Security in Joomla! 3.x”