This error is usually not a server problem, and is caused by one of the following errors.
- Your email client is misconfigured
- Your ISP is blocking access to port 25
- There is a DNS problem with your ISP
- There is an error with SMTP on one of our servers
Below you will find the most common solutions to fix the above problems:
- Shutdown and restart your computer.
- Make sure Outlook is configured for "SMTP: My server requires authentication," and then use the same username and password as POP3 account.
- Use port 26 for SMTP instead of port 25. Many ISPs are now blocking port 25 to prevent their clients from spamming.
- Temporarly turn off all virus and/or firewall software.
If all of the above solutions fail, please confirm that the mail server is online and responding you can perform the following:
- From the Start button click Run
- Type in telnet yourdomain.com 25
You should receive something to the effect of:
- 220-host.transparnet-tech.com ESMTP Exim 4.52 #1 Day, XX Month Year HH:MM:SS
220-We do not authorize the use of this system to transport unsolicited,
220 and/or bulk e-mail.
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