If users try to send email with above attachment, they may get error email/bounce back message which look like this
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"mails.rpxholding.com[202.155.64.99] said: 554 Transaction failed (in reply to end of DATA command)"
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in that case remove the forbidden attachment before try to sending it again.
for JPG file can be attached as file, signature or background image
Solusi: Silahkan gunakan BOX <http://box.rpxholding.com/> untuk mentransfer tipe file tersebut
If you are not infront of your PC and want to access your email, you can always open Webmail (http://webmail.rpxholding.com) on all PC on RPX network and also on Internet Cafe (Warnet)