Category Archives: Uncategorized

Correct putty settings for use with SCO Openserver 5.0.7

After so long since it was it was in mainstream use I am still doing regular work for customers with SCO Openserver, gradually they are all coming off the platform, but while it is still in use it’s nice to have the best possible experience.

A lot of the time if I am in a rush I will just use the Windows telnet client to connect to SCO Servers but really putty is so much nicer and you only need to change a few settings to get great compatibility with SCO.

Improve general putty settings first

If you haven’t already taken the time to improve upon the general defaults in putty, you might as well do that now, makes it a much nicer client to use in my opinion:

Specific settings for using Putty as a Telnet client with SCO

Keyboard settings

Change your keyboard settings to:

Backspace Key sends Control-H
The Function keys and keypad set to SCO

Correct keyboard settings for using putty with SCO

Window Settings

Change the remote character set to ISO-8859-2: 1999 (Latin-4, North Europe).

Terminal Type

Set your TERM environment variable to xterm and you should have a decent looking display and emulation when using SCO.

SCOadmin with correct terminal settings


Personally I sometimes like to have a 132 column width display which you can easily do by setting the terminal type to ansi-w in SCO and then changing the number of columns in putty to match.

Office 365: 550 5.7.1 RESOLVER.RST.AuthRequired when emailing a mail enabled public folder

A recent change in Exchange online seems to have caused a problem with mail enabled public folders receiving messages from people outside of the organisation. It has never been necessary with Office 365/Exchange OnlineĀ to give create permissions to the anonymous or default users , you could instead set the mail flow settingsĀ of the public folder to allow anonymous access.

You may see the following bounce message when sending to a mail enabled public folder:

Delivery has failed to these recipients or groups:

Your message wasn’t delivered due to a permission or security issue. It may have been rejected by a moderator, the address may only accept email from certain senders, or another restriction may be preventing delivery. For more tips to resolve this issue see DSN code 5.7.1 in Exchange Online. If the problem continues contact your help desk.

5.7.1 RESOLVER.RST.AuthRequired; authentication required [Stage: CreateMessage]>’

Of course it is possible and easy to set permissions for the public folder from Outlook to solve this problem, but doing this does not seem to be working for everyone. Some people are reporting success with it, but others not.

Setting the public folder permissions with PowerShell fixes the problem, but I cannot understand why there is a difference.

Setting Offiec 365 Public Folder Permissions with Powershell

In order to fix this problem you have to grant create permissions to anonymous and the default user. The Powershell cmdlet to do this is Add-PublicFolderClientPermission.

After connecting to Office 365 Remote Powershell as described here, you can run the following commands:

Add-PublicFolderClientPermission -identity "\test public folder" -User Anonymous -AccessRights CreateItems
Add-PublicFolderClientPermission -identity "\test public folder" -User Default -AccessRights CreateItems

Once you have added the permission it’s probably best to give it a quick check with:

Get-PublicFolderClientPermission -identity "\test public folder"

Hope this helps.