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unable to send emails when connect to WIFI

When I am out of the office I tend to use WiFi access at a number of different locations.  Half of the time my outgoing mail will not send, even if I hit the Send/Receive button.  It just sits in my outbox.  Outlook will try to send it, but with no luck.  Do you happen to know why I get inconsistent results in trying to send mail?  This happens half of the time when I am connected to unsecured WiFi. Thanks
1 Solution
Greetings changjia !

1. Register an important send/receive library file.  Go to Start > Run and type regsvr32 inetcomm.dll

2. 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.

3. In the account settings, Advanced settings, change the server timeout time from 1 min to 5 min

4. Check if outgoing mail server authentication is required. Select that option in account settings and use same settings as incoming server

5. Your ISP may be blocking port 25. Try using alternate port 587.

If no joy, you need to use your ISP SMTP server to send out emails.

6.  Check with email provider Tech Support to determine if server is having trouble.

Best wishes, war1
Most likely this is due to reason (5) mentioned by war1, i.e. many ISP's block port 25, which is needed for outgoing mail. They do this in a attempt to reduce spam.

You can try port 587, but if that doesn't work you have the following choices:

(1) Use webmail (OWA) when you are outside the office. That should alweys work.

(2) Check with your system admin to see if a VPN connection is an option.

(3) If you're using the same wireless access point repeatedly, find out what the recommended local SMTP server address is, and configure Outlook to use that for outgoing mail.

You will probably find (1) the most convenient, and (2) and (3) in that order.

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