Applies to:
Difficulty Level:


Time Needed:

10 minutes

Tools Needed:

Email Client such as Outlook, Livemail or Mail (Mac)


If you are having problems sending e-mail but are still able to receive email most likely the issue is that your ISP (Internet Service Provider such as Optimum Online, Verizon, Comcast, EarthLink) is blocking port 25 to help control the amount of spam and viruses that originate from their servers. More info on why port 25 may be blocked is on Optimum’s website.

In the past, sending email via Port 25 was standard. However, as Spam has increased ISPs have implemented stricter policies.

Your ISP’s efforts are to protect them from the affects of sending too much spam and do nothing to protect your from getting spam. To protect your e-mail account from spam contact Bower Web Solutions to learn about our premium email defense service. You can also do a lot of things on your own to  prevent yourself from being spammed.

The following tutorial is provided as a courtesy to our hosting customers to help you make changes to your outgoing email setting so that you can send email when you can still receive email. While we try our best to assist our customers, assistance with third-party software can not be supported completely by Bower Web Solutions.

How to Change your Outgoing Server so you can Send Email.

    1. If you already have your e-mail program (such as Outlook, Mac Mail etc) you do not need to recreate your e-mail account information again. You simply need to edit the existing account and change the SMTP server for the account(s).
    2. Access the account settings for the email account that is unable to send.Outlook 2007 and older: Mouse over Tools in the main navigation bar and click on accounts.
      Check that the account Type (under server information) is POP3.
      Outlook 2010 and later: Choose File in the top left corner. Click on the ‘Account settings’ box in the center and then click on the ‘Account Settings: Add or remove accounts or change existing accounts’ box that appears. Check that the account Type (under server information) is POP3.
      Click on the ‘more settings’ button (in the bottom right of the pop up box).
      Live Mail: Mouse over Tools in the main menu bar and click on accounts. Double click  on the account that is full.
      For other email clients  see our tutorials on email setup for a reminder on how to access the account settings.
    3. In the e-mail account you want to change, the incoming and outgoing mail server to
      Under Advance Settings in most programs, outgoing server should be the same as incoming server, and my outgoing server (SMTP) requires authentication should be checked.
    4. Outgoing server should be set for port 587.

If you continue to experience difficulties contact your system administrator.


  • If you plan to send large numbers of mass e-mails to your client base, you really need to consider a separate service such as Constant Contact. For less than 75 cents a day, you can take advantage of advanced e-mail tracking features and sleep at night know that your web site or web server will not be “blacklisted” by the major ISPs! Get your FREE Constant Contact trial  account now!

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Tom Hart

Tom Hart is a web developer and Constant Contact Certified Solutions Provider. Tom is also a photographer and his images have graced many websites.

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