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>I have seen three different reasons for this.
>
>1. The smtp server requires authentication (I've never known earthlink to require this).
>2. Traffic issues because of the Slammer worm (I thought that earthlink used sendmail on Solaris).
>3. The local mail spooler is full. This would explain why a reboot fixes the issue. How to change that in Outlook I'm not sure. How's your system resources; disk space, memory, virtual memory?
Most likely, as you suggested, it is item 3 on your list. I think I have plenty of ram (512) and disk space. I have not checked virtual memory though. But I will check it next time I have the same problem.
Thank you for your help.
"The creative process is nothing but a series of crises." Isaac Bashevis Singer
"My experience is that as soon as people are old enough to know better, they don't know anything at all." Oscar Wilde
"If a nation values anything more than freedom, it will lose its freedom; and the irony of it is that if it is comfort or money that it values more, it will lose that too." W.Somerset Maugham