get 'real' gz-file when decrypting

[akorthaus@web.de]

Hallo!
Now my complete Script works perfectly, thank you very much!
But two small features would be fine:
1. How can I encrypt the gzip contend that I get 'file.gz' and not just
'file' when I decrypt?

mysqldump database | gzip | gpg --homedir /www/.gnupg -o
output.pgp -e --default-recipient andreas

what could I do? If I decrypt  the file 'output' is created, but I would
like to have 'output.gz'

2. I did not write --recipient, but --default-recipient. I only did so,
because if I only write --recipient, there is asked:

>gpg: Warning: using insecure memory!
>Could not find a valid trust path to the key.  Let's see whether we
>can assign some missing owner trust values.

>No path leading to one of our keys found.

>1024g/DFF7F6EF 2002-06-03 "andreas <akorthaus@web.de>"
>            Fingerprint: 0776 4804 3333 321E E4B4  366E 3ABA 3411 DFF7 FFE7

>It is NOT certain that the key belongs to its owner.
>If you *really* know what you are doing, you may answer
>the next question with yes

>Use this key anyway?

If a answer yes, all is OK. Is it OK to use --default-recipient, or should I
worry about this?

-- Andreas