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503 Valid RCPT command must precede DATA – How to resolve this Outlook error in cPanel/WHM hosted email accounts
Customers who use Outlook to access email accounts hosted on cPanel/WHM email servers sometimes report the error 503 Valid RCPT command must precede DATA when trying to send their mails. This is often reported for servers in which SMTP authentication is enabled. What...
IIS error tracing – How to use Process Monitor to diagnose IIS errors in Windows servers
In our role as Outsourced Tech Support for web hosts, trouble-shooting and maintaining IIS web servers is something our engineers do on a regular basis. We've seen that, in Windows dedicated servers and VPS, users sometimes request assistance in troubleshooting HTTP...
HTTP Error 503 The service is unavailable – How to resolve this website error in Odin Plesk Windows servers
In Odin Plesk Windows servers, customers sometimes report their sites being unavailable with the error showing : "HTTP Error 503. The service is unavailable." This usually happens after a major change like a migration, site restore, etc., and leads to all sites of the...
The host could not be found – How to resolve Outlook error (0x800ccc0d) in Odin Plesk email accounts
Occasionally Odin Plesk customers report inability to send or receive emails reporting the following Outlook errors: The host 'mail.domain.com' could not be found. Please verify that you have entered the server name correctly. Account: 'username', Server:...
open_basedir restriction in effect – How to resolve access restriction error in Odin Plesk Linux servers
Occasionally website owners report the error "Warning: realpath() [function.realpath]: open_basedir restriction in effect. File(/path/to/file) is not within the allowed path(s)" displayed for their websites in Odin Plesk servers. It usually happens after installing an...
How to fix “Fatal: unable to initialise SFTP on server” in Odin Plesk shared, VPS and dedicated servers
Shared, VPS and dedicated server customers using Odin Plesk sometimes report inability to use SFTP. The error reported would be "Error: Fatal: unable to initialise SFTP on server: could not connect. Error: Could not connect to server". SFTP allows customers to...
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