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Email Forgery FAQ

This article aims to answer some questions we frequently receive regarding spam emails which seem to come from yourself or a user you know.

Q: How does someone make it look like he/she sent an email to themselves or make it so that it looks like it comes from someone I know?
A: The email system was designed in the beginning to behave exactly like the postal mail system.  Postal mail was very familiar and reliable, so it seemed reasonable from a programmer’s point of view to create a system which behaved in the same way.  As such, there is no “sender verification”.  This means that there are no controls in place to verify the sender is who he says he is.   With postal mail, you can send a letter with a fake return address and name on the envelope and you can do exactly the same thing in email.  All you have to do is go into your email program and change the Name and Email Address fields in your settings before you send the email.  Spammers and scammers frequently use this to help trick someone to opening an attachment and/or reading the email because people are more likely to read an email from someone they know.

Q: How would I know which email address it really came from?
A: You don’t.  The email system does not require sender authentication, so there is no way to tell who an email really comes from.  Sometimes the headers (envelope) of the email can be used to track a sender based on the IP address it came from, but this process usually requires a court order and it still may not track the email to an individual user.  For instance, if an email is sent from a restaurant which offers free wireless internet, the court order may determine that the email came from the restaurant itself, but would not be able to determine the individual patron.

Q: How do we know what to blacklist so we do not get more email from this offender in the future?
A: You don’t.  Because changing the sender is so trivial, the scammer/spammer can easily change the From address on subsequent messages to get around your blacklist.  Spam is a very difficult issue and this is one of the reasons why.   You cannot rely on filtering systems to make your email 100% safe – you must be diligent in your inspection of emails.  Do not open an attachment that you are not sure is legitimate.  For example, if someone you “know” sends you an attachment you aren’t expecting, contact them and make sure they actually sent it before opening it.

 

2018-03-07T22:58:46-06:00May 18, 2016|FAQ|Comments Off on Email Forgery FAQ

Widespread Comcast Outage

We are currently experiencing an outage with  Comcast who is our upstream internet provider for our office. Due to this calls into our phone system are not stable and may be dropped. If our phone system is down when you call you will be prompted to leave a voicemail that will be delivered to our technicians to call you back. Currently we know that the outage is affecting companies as far north as Huntsville.

This outage is not affecting web hosting and email services. We have a dedicated fiber optic link that is providing internet for those services.

We will post any updates as we receive them and apologize for any inconvenience.

 

2016-05-12T16:47:34-05:00April 25, 2016|News and Updates|Comments Off on Widespread Comcast Outage

Hosted Exchange Update

April 8, 2016 – We applied an update to our Hosted Exchange services to improve compatibility with the new Outlook 2016 version.  As a result, users may get a message similar to the one below.  Please place a check mark next to “Don’t ask me about this website again” and hit “Allow” if you see this popup message.   It will not affect your security in any way and once you accept the message, you will not be bothered again by it.

If you have any questions or concerns about this update, please email support@internetpro.net or call our office at 256-547-6817.

exchangemessage

2016-04-09T00:08:34-05:00April 9, 2016|News and Updates|Comments Off on Hosted Exchange Update

Site Maintenance

April 6, 2016 – We are experiencing some performance problems with our website (https://www.netsolinc.com) and we are trying to isolate the cause.  While we do some troubleshooting, you may notice the site not behaving properly.  This is temporary and we are aware of the issue.  We apologize for the inconvenience.

 

Update – April 11, 2016 – Well it took us a few days to track it down, but the issue ended up being the “Latest Virus Alerts” feed at the bottom of the site.  We pull that data from Sophos and apparently they moved the feed.  Our site was slowing down because the feed was timing out and the site was not rendering until that happened.  We’ve updated the footer with a new feed from the same company.

Additional – While working on the site, we took the opportunity to make some adjustments so that the netsolinc.com site is completely served by SSL, meaning that all of the information on the site is served to customers through encrypted traffic.  Google and other companies are making a push to move all traffic to SSL in the future.

 

2016-04-12T12:43:01-05:00April 6, 2016|News and Updates|Comments Off on Site Maintenance

Phone Line Trouble

March 28, 2106 – 10:00am:  We are experiencing issues with our phone lines resulting in callers getting a busy signal when trying to reach us.  We are also having trouble calling out.  A very few calls are able to come through, but not all. If you are having trouble, please try reaching us at support@internetpro.net and we will do our best to contact you.  We have contacted our phone provider and are working to resolve the problem.  Updates will be posted here as soon as we have them.

 

11:30am – Our phone services have been restored.  Apparently, the SIP password for our upstream connection was cracked and our lines were being used by third-parties to make unauthorized calls.  This used all of the call paths we are authorized for and caused our lines to be busy.

2016-03-28T16:30:06-05:00March 28, 2016|News and Updates|Comments Off on Phone Line Trouble

Emergency Maintenance

February 19, 2016 – A critical vulnerability has been identified in the Linux operating system.  This issue affects many of the services running on Linux servers and can result in the server being completely taken over.   Most of our infrastructure is based on Linux and as such, we are having to patch this vulnerability as soon as possible.  You can read more about the issue in this article if interested.   For most updates on Linux, a reboot of the server is not necessary.  However, this particular vulnerability affects many services, some of which cannot be restarted without a reboot.   For that reason, we will be doing emergency maintenance which will require updates/reboots of many of our servers.  We are scheduling this to happen between 11:00pm Saturday the 20th and 2:00am Sunday the 21st.   During this time, some services will be temporarily unavailable including email, web hosting, and offsite backup services.   Not all services will be unavailable at the same time, but there will be disruptions periodically during the maintenance window.  We will post more updates here as the issue is addressed.

If you have any questions or concerns, please email us at support@internetpro.net or call 256-547-6817.

Update 4:28am February 21, 2016 – Our maintenance went a little longer than planned but all servers should be safe from the vulnerability found in the Linux OS.  We also were able to implement some upgrades on our virtual server hosts while we were working on the issue.  These upgrades result in faster virtual machines and more features.  If you have any issues with your web page which we missed, please email us at support@internetpro.net or call 256-547-6817.

Thank you and we apologize for any inconvenience.

Update 10:15pm February 22 – One of our virtual server hosts did not properly upgrade and we are having to work on that server.  It is affecting some VPS machines and websites.

Update 11:00pm February 22 – The server update problem has been corrected and all hosts should again be online and functioning properly.

 

2016-02-22T04:59:14-06:00February 19, 2016|News and Updates|Comments Off on Emergency Maintenance

Fax Trouble

February 19, 2016 – We have found that our fax line (256-547-6818) is temporarily out of service.   We are working with AT&T to get the service restored.  In the mean time, if you need to send us a document, please scan it and send it to support@internetpro.net.   We will post an update here when the service is restored.

 

Update- The issue with AT&T has been resolved and we are again able to receive faxes!

 

 

2016-02-19T15:22:43-06:00February 19, 2016|News and Updates|Comments Off on Fax Trouble

Planned Maintenance Notice 01/22/16

We will be performing maintenance on our systems starting Friday, January 22nd at 5:00 PM CST until 12:00 AM CST Sunday, January 24th. During this window we will be upgrading our systems and applying patches to our hosted solutions servers. Web hosting and Cloud storage services will be affected and may be down for extended periods of time.

These changes are necessary to maintain the best security and performance possible for our customers. We apologize for any inconvenience this may cause. If you have any questions please feel free to call us at 256-547-6817.

Update 5:30pm January 23, 2016 – Major upgrades to our infrastructure have been put in place.  If you see any issues getting to sites or services on our network, please contact us at 256-547-6817 (hit 8 for support if it is after hours) or email us at support@internetpro.net.  We have done our best to check services to make sure everything is working properly, but there are many servers/services involved so it is possible that something was overlooked.  We have also made enormous upgrades to our Netsol Cloud offerings and we will be detailing those in another post as soon as the upgrades are complete.

Update 7:25pm – There was an outstanding issue which caused some email from outside our domain to be delayed.  No email was lost, and the issue has been corrected.  Any email which was delayed should be delivered normally within the next hour or so.

Update 8:45pm – We found another issue which caused some traffic problems for about 20 minutes at around 7:50.   They have been addressed and another outstanding bug affecting a small number of email customers has been squashed.

Update 9:20pm – FTP services to web servers are being negatively affected.  We are working to resolve that issue.

Update 10:20pm – FTP services were always working in Active mode but Passive mode was not working properly.  As of now, both modes are working on all servers.

 

 

Thank you,
Robert Evans
Network Engineer
Office: 256-467-6307
Email: revans@netsolinc.com

2016-01-24T04:19:12-06:00January 19, 2016|News and Updates|Comments Off on Planned Maintenance Notice 01/22/16

Phone System Crash

January 14, 2016 – Unfortunately, our phone system has experienced a failure and we are unable to receive calls properly.  We are in the process of switching over to our failover solution which will allow customers to leave voicemails which we will return.  However, customers who are able to email to support@internetpro.net will have faster response.   We do apologize for the issue.   The system may be out for an extended period of time as it does seem to be a hardware failure which may take some time to resolve.  We will post updates here as we have them.

Update 8:45am – Our failover solution has been put in place so all calls will go to voicemail.  These voicemails are forwarded via email to our staff and will be returned as quickly as possible.

Update 2:00pm – Our phone system functions have been restored to normal!   If you try to call into our office and are still having trouble, please email us to let us know, but it looks like everything is working correctly.

 

2016-01-14T20:11:41-06:00January 14, 2016|News and Updates|Comments Off on Phone System Crash

Adobe Flash Update Breaks Dentrix

We have learned that the Adobe Flash Player Update that was released on 12/28/2015 has caused major issues is the functionality of Dentrix. The most prominent issue we have seen that is that the Treatment Planner is unable to print. When this happens an error box will appear stating that is has preformed an Unhandled Exception instead of displaying the print dialog.

To resolve this issue follow the following steps:

  1. Close all Dentrix programs.
  2. Uninstall Adobe Flash Player from your Computer using the uninstall tool provided by Adobe. Download the Adobe Flash Uninstaller Here.
  3. Once the uninstall has completed reboot your computer.
  4. Once you have logged back into your computer, download the Dentrix recommended version of Adobe Flash Player. Version 20.0.0.228. You can download the files needed Here.
  5. Once downloaded Unzip the file folder and go to <Unziped File Folder>\fp_20.0.0.228_archive\20_0_d_0228\ and double click the file named flashplayer20_0d0_228_winax.msi
  6. Once the install has completed open your control panel and tell it to show large icons in the upper right hand corner of the window. Open the console labeled Flash 32bit. Click the Update tab and select the radial button for never check for updates.

If you still are having issues after applying this fix or are not comfortable making these changes please call our support technicians at 256-547-6817 and we will be glad to help resolve the issue for you.

Thank you and have a Happy New Years!

2015-12-31T16:45:02-06:00December 31, 2015|News and Updates|Comments Off on Adobe Flash Update Breaks Dentrix
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