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Why does my laptop bounce email?

When I send email with an attachment (an mp3) to my laptop from my desktop
computer, it bounces back with a message that my laptop inbox is full. However,
it isn’t full. In fact, I’ve cleaned everything out of my Outlook Express on my
laptop, including deleted messages, sent mail, etc. There’s nothing there. Why
is this happening and how can I fix it?

It’s not your laptop that’s complaining. Exactly who is complaining
depends on how you’ve got your email accounts set up, and which account you’re
sending it to.

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The first thing to realize is that your laptop, or more correctly Outlook
Express or any email client running on your laptop, doesn’t bounce mail. All a
mail program does is download mail, which either works, or doesn’t. If it
doesn’t, the mail program will display an error message right then and
there.

A bounce happens when a mail server has to reject a message it’s
receiving for some reason.

Since it’s complaining about an inbox being full, we can assume that the
mail server that’s complaining is the your ISP’s mail server that hosts the
email account you’re attempting to send to – the one your laptop would download
mail from (i.e. the POP3 server and account settings as configured in the
laptop). That might be the same server that you’re using to send from (the SMTP
server and account settings you’re using on your desktop), but it might not
be.

“When you download your email, you are in effect moving
it from the inbox on your ISP’s server to the inbox in your mail
program.”

So why is it complaining about an inbox when the inbox is on your laptop?
Because you have an inbox on your ISP’s mail server. The mail server for your
account has to have a place to hold your email until you come along with
Outlook Express and download it.

Say you don’t check email for a few days, but email is still arriving for
you. That email is kept, in an inbox, on your ISP’s mail server. When you
download your email, you are in effect moving it from the inbox on your ISP’s
server to the inbox in your mail program.

Many ISP’s place a “quota”, or a maximum amount of email that you may have
in your server’s inbox at any one time. Normally simply downloading email into
your mail client periodically is enough to keep that server’s inbox empty as
mail is moved from it to the inbox on your computer.

So, why would that inbox be “full”?

Two reasons come to mind:

One, the MP3 file you’re attempting to send may, itself, be bigger than the
quota. For example if your ISP limits you to, say, 5 megabytes of email storage
in your mail server’s inbox, then a 6 megabyte MP3 file simply won’t fit. In
reality, because of the way attachments are encoded, it’s likely that a 4
megabyte, or even a 3 megabyte MP3 file also won’t fit. Attachments get bigger
when they are encoded in email.

The other might be that your mail client could be configured to leave all
messages on the server. This is typically not the default setting. What happens
is that instead of moving your messages from the ISP’s mail server to
your inbox, it copies them – leaving the originals on the server.
There, they continue to accumulate and eventually your quota may be
exceeded.

So the solution is to a) verify your mail quote with the ISP providing the
account you’re attempting to receive the file on, and b) make sure that your
email client is not configured to leave email on the server, but rather
download it and remove it from the server.

And finally, if you’re just attempting to copy a file from one machine to
another on the same network, mailing as an attachment is a lazy, inefficient
way to do it. (Yes, I do it too, but it’s still lazy and inefficient.) The
“right” way is to use file sharing and simply copy the file from one machine to
the other. Much faster, and no quotas involved.

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