Question:
I can suddenly no longer send mail – my website works and I can receive mail but I cannot send any mail. What is wrong?
Answer:
What is most likely happening is that your local ISP is no longer allowing you to send email out using any mail server except their own. This is a common practice that many ISP’s do now in order to attempt to better control their networks.
What you will need to do to get around this is either:
1.) set your outgoing / SMTP mail server to your ISP’s mail server. You may need to call your ISP to find out exactly what they use. Usually it is something like :
mail.your_isp.com
or
smtp.your_isp.com
If these do not work, you’ll need to contact them to find out what they use.
Make sure you DO NOT change your incoming / pop3 mail server name. It must stay the same so that you can still get mail from us.
2.) The other option is to keep you mail settings the same but change the SMTP port from 25 (the default) to 2525 . We run mail on ports 25 and 2525 so that clients whose ISP’s no longer allow outgoing mail can still send mail. In most cases, the ISP is only blocking mail the port 25 so if you set your mail program to use port 2525 you will be able to send again.