Eshop com_eshop_1.2.4 installation problem...

hello i'm trying to install the com_eshop_1.2.4 but it says "Error
There was an error uploading this file to the server." i've tried to install something else and it was successfuly... Your support mail is has a problem... support@joomdonation.com (Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domain joomdonation.com )

tnx

Hello,
I think this because the max file size upload setting on your server is less than 3MB. You should increase this to 4MB (because com_eshop_1.2.4.zip is around 3MB). Or you can alternative to install it via folder.
Please let try again and let me know if you can install it.
Sincerely, Giang