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Inbox Repair do repair large sized files

Scanpst do scan missing PST files

Efficient software for all saved PST files

Perfectly manages entire damaged PST well.


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System Requirements

Processor : Pentium Class or High Class Procesors

Operating System : Windows (Windows 2000, XP, Vista, 2003) and Macintosh (Mac 10.4 x tiger, 10.3.9 Panther, and 10.5 x leopard)

Memory : Minimum 256 MB (512 MB recommended)

Hard Disk : 50 MB of free disk space

Software Help

"Thanks for the amazing Inbox Repair Tool. This can do recover out the entire lost and missing PST files in an efficient manner"

"Its really great to use this software, I was able to use it of my own without any kind of technical assistance."

Latest Articles

While using Outlook you would face number of error messages frequently. Some are easy to fix but some are very critical and need external help in fixing. The Outlook Error 421 “Message Rejected” is such type of error that occurs without any reason and stops the user from sending mail to a group. However it allows the user to send mail to the single recipient but when including a group it raises the following error message:

An unknown error has occurred. Subject 'Testing', Account:
'', Server: '', Protocol: SMTP, Server
Response: '421 Message rejected', Port: 25, Secure(SSL): No, Server Error:
421, Error Number: 0x800CCC67


There might be some strong reasons behind this error that need to be fixed in order to fix this error. Some error might be external and some are internal. This error occurs because of your ISP settings, slow internet connections, your firewall settings, PST problem and registry corruption.


Download: Inbox Repair Tool! is a complete application for repairing damaged PST files.

How to fix Outlook Error 421 message rejected error

As mentioned earlier, there might be various reasons behind this error so, in order to fix this error you will have to check all the issues one by one. At the starting, apply for the business account to your ISP. The Internet Service Provider provides limited account for each user to work with. Another reason is that your ISP server might block your bulk e-mails by taking it spamming. So, in this situation you will be able to send mail to single recipient in one time but will be unable to use chart address.

If you are using already business account then there might be trouble in your PST file. When you send or received any e-mails via outlook, an acknowledgement and messages are saved in PST file. If PST file is working slowly then it refuses the bulk request and accept only single request in one time. So, because of this reason, the user is able to send single messages but fails to use group mail and get Outlook Error 421 message rejected error. In order to fix this error, scan it with Inbox Repair Tool or fix it with another effective PST Repair Tool.