I changed broadband provider and now I cannot send email!

"I changed broadband provider and now I cannot send email!"

If you

  • use an email service provided by a broadband company, e.g. eircom,
  • and you use a desktop email client, e.g. Outlook
  • and you change your broadband provider, you will run into trouble sending mail.

You'll probably get an error like this:

" The rejected e-mail address was 'xxx@xxx.xx'. Subject '', Account: 'windows mail', Server: 'smtp.example.net', Protocol: SMTP, Server Response: '553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)', Port: 25, Secure(SSL): No, Server Error: 553, Error Number: 0x800CCC79 "

This is because you cannot send mail through one prover's servers via another's network, e.g. eircom will not let you connect to their server using NTL's connection.

"But I can still receive mail", I hear you say.  This is because sending and receiving use different servers, and this issue only applies to sent mail.

The solution is to point your Outlook (or equivalent) to the SMTP (simple mail transfer protocol) server of your broadband provider.  

Some example smtp servers:

  • mail1.eircom.net
  • smtp.ntlworld.ie
  • mail.imagine.ie


Your broadband provider will be able to supply the correct settings.