Problem with Scheduled BackUps

Hi,

I've been running scheduled backups to an S3 bucket for over a year on my Virtualmin; for the last few days, I started seeing this error when the backup is running:
Uploading archive to Amazon's S3 service ..
.. upload failed! Empty response to HTTP request

I have tried to do some research about this error, but haven't found out what it means. Can anybody point me in the right direction to solve this?

Thanks

Status: 
Active

Comments

Is the S3 bucket you are trying to backup to perhaps in a different region, or protected with an ACL ?

No, it's not in a different region or protected. What's even more confusing is, that after a week of sudden failures, the backup ran successfully last night and I didn't even touch anything. This is so weird...

That is odd - perhaps a network issue contacting S3?