Resolving MS Outlook 2003 Error: Unable to send this item
To illustrate, consider a user of MS Outlook 2003. The user receives all e-mails with no issues, but each time when he/she tries to send an e-mail message, the operation fails and the below error message pops up:
"Unable to send this item."
When the message is viewed in Outbox folder, it has no corresponding item, but Sent Items has, even when the message has not been sent.
Cause
MS Outlook 2003 exhibits the described behavior in case:
1.Some problems appear in your e-mail account configuration
2.Connection problems occur with ISP (Internet Service Provider)
3.Outlook PST is damaged
Solution:
1.Create a new Outlook profile that includes all those services that are giving problem and attach the old *.pst file. If this doesn't solve the problem, then,
2.Check if a secure and proper Internet connection is available.
3.Make sure that TCP/IP is your default protocol
4.In case the problem is due to PST damage, repair the PST using Outlook Inbox Repair Tool. For this, locate the program file-'scanpst.exe', double-click it and proceed as prompted
However, Inbox Repair Tool is the not the perfect PST Recovery Tool in all instances of PST corruption. To repair the PST that cannot be repaired by this tool, you need to use a third-party PST File Recovery utility. These software run most effective scanning algorithms to repair a corrupted PST.
PST Recovery Software [http://www.pst-recovery-software.com/] is an advanced PST file recovery application that is designed to restore data from damaged PST created with MS Outlook 2007, 2003, 2002, and 2000. The simple PST Recovery Tool can also recover deleted e-mails and is compatible with Windows 7, Vista, XP, 2003, and 2000.