outlook express:
参见：
How to troubleshoot e-mail messages that are stuck in your Outbox
对于outlook 2003,2007
1. With Outlook open, go to Tools > Options > Mail Setup. Check "Send immediately when connected".
2. Click on the Send/Receive button on Mail Setup General tab. Make sure both options "Include this group in Send/Receive" are checked. Make sure that your account is included in the Group to send.
3. If no joy, register an important send/receive library file. Go to Start > Run and type regsvr32 inetcomm.dll
4. Check if antivirus email check is slowing sending and receiving. Disable it. Check if other programs running in the background is interfering. Disable one at a time the Firewall, antispyware, antispam, and all Norton programs.
5. In the account settings, Advanced settings, change the server timeout time from 1 min to 5 min
6. Check if outgoing mail server authentication is required. Select that option in account settings and use same settings as incoming server
7. If no joy,create a new Outlook profile.
http://www.outlook-tips.net/howto/profile.htm
8.Check out any plugins that you have installed which are related to Microsoft Office. Try uninstalling.
In my case I had installed fax plugin due to which my mails were getting stucked in outbox without being actually sent to the recepients.
9.try deleting the .srs file (while Outlook is closed)
in the folder %AppData%\Microsoft\Outlook.
about SRS file:
| Outlook 2002 Send/Receive Settings File | Microsoft Corporation | |
| Specific Notes [What's This?] | ||
| A Send/Receive Settings file is stored data collected from Outlook's Send/Receive Settings message box located on Outlook's toolbar under Options | Mail Setup. This data, usually defined through options selected by a network administrator or by default, provides the information needed for handling incoming and outgoing Send/Receive Groups, which carter to and collect information from E-mail service providers that have unique protocols (eg., HotMail, Yahoo, Comcast, etc.). However, this file (OUTLOOK.SRS) is not created until the first run of Outlook for each messaging profile. This .SRS file cannot be copied to other workstations and must be registered on the workstation with the Outlook messaging profile. ..... | ||