Knowledgebase
What can I do if my ISP blocks outgoing email?
Posted by Sean Syed on 20 February 2013 06:38 PM

Some ISPs block outgoing email that isn't delivered through their own mail servers. This can help prevent spam but it also stops you from using your Advanced mailbox's SMTP server.

A quick and easy solution is to change the port that your email software uses to send outgoing email. We have provided port 225 and 587 for outgoing email, in case your ISP blocks the standard port 25.

 
Outlook 2003 and 2007
 

Step 1
Open Outlook 2003.

Step 2

Click the Tools menu, then click E-mail Accounts.

Step 3

In the E-mail Accounts wizard, select the radio button beside View or change exisitng e-mail accounts, then click the Next button.

Step 4

Highlight your Advanced mailbox account and click the Change button.

Step 5

Click the More Settings button, which will open a new window.

Step 6

Click the Advanced tab, enter 8889 for POP3 Account or 587 for IMAP Account in the Outgoing server (SMTP) text-box, then click OK.

 
 

Step 7
Click Next, then click Finish.

Your email will now be sent, using port 25 or port 587, to your standard DNN4Less mail server. This should solve the problem of your ISP blocking outgoing email to mail servers other than their own.

Outlook Express, Windows Mail and Windows Live Mail

Step 1

Open Outlook Express/Windows Mail

Step 2

Click the Tools menu, then click Accounts.

Step 3

Highlight your Advanced mailbox account and click the Properties button, which will open a new window.

Step 4

Click the Advanced tab, enter 110 for POP3 Account or 143 for IMAP Account in the Outgoing server (SMTP) text-box, then click the OK button.

Step 5

Click the Close button to complete the change.

Your email will now be sent, using port 110 or 143, to your standard DNN4Less mail server. This should solve the problem of your ISP blocking outgoing email to mail servers other than their own.

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