Are you able to receive emails but not send (port 25 blocked)?

Are you able to receive emails but not send?
Or my emails worked in UAE & when I travelled abroad it stopped working?

If you aren't able to send email, this usually means one thing: your internet provider is blocking you from using anyone's outgoing mail servers but their own. Many major internet service providers (ISPs) in EU, US and Australia block port 25 (in UAE no such issues are reported), the channel used for communication between an email client and an email server, to prevent their internet connection from being used for spam. When an email client that runs on your computer delivers messages, it uses port 25 to transmit data to remote email servers; therefore, if your ISP is blocking the port, your messages will not get through.

In order to work around this issue, we have opened Port 26. The ISPs that block port 25 require their SMTP server to be used instead of the remote SMTP server; so you will need to change the outgoing mail server (SMTP) from the default Port 25 to Port 26.

If you use Outlook (or any other email software/device), please be sure to select the option for Outgoing SMTP Server Requires Authentication. This is now required for our server security.

Some ISPs that block port 25 include:

  • AT&T
  • MindSpring
  • BellSouth
  • MSN
  • CableOne
  • NetZero
  • Charter
  • mails
  • People PC
  • Comcast ATTBI
  • Sprynet
  • Cox
  • Sympatico.ca
  • EarthLink
  • Verio
  • Flashnet
  • Verizon
  • MediaOne
  • Telus
  • Many ISPs in Europe and UK
  • Many ISPs in Australia

If your ISP is on this list or you believe port 25 is blocked, please open your settings in the application/device that cannot send emails and change the outgoing port from 25 to 26. Please do NOT use any SSL settings.

Was this answer helpful?

 Print this Article

Also Read

Email Set Up on Outlook 2007

How to Setup Outlook 2007 This guide will show step-by-step instructions for setting up email on...

Email Set Up on MacMail

Setting up email account in Mail on OS X and above. Adding a New Account Choose Preferences,...

What do I put for both incoming and outgoing mail server?

For both incoming and outgoing mail server, put :mail.yourdomain.ae (replace with your actual...

Email Set Up on Outlook 2003

Email Setup with Outlook 2003 This guide will show step-by-step instructions for setting up...

Email Set Up on Windows Phone 8

Summary This article will show you how to setup email on your Windows Phone 8 powered device....