I can receive e-mail fine but cannot reply or send new e-mail.
I cannot send an e-mail through Microsoft Outlook 2007 to anyone other than another user within the same domain (in this case "sasktel.net"). The coding after the 550 5.7.1 message changes slightly each time but the result is the same. I have read other posts on this error but none have helped so far. I have tried sending plain text e-mails without any imbedded links but to no avail. Have also talked to SaskTel tech support but no luck there either. I have also tried restoring the default settings to Outlook but that hasn't helped either.
Thanks for your help.