Actualy there is a limit to how many emails you could send at one time via your hughes email. Read this email for further details
https://community.myhughesnet.com/hughesnet/topics/big_brother_syndrome_they_are_all_caps_because_i_..., to sum it up this is the overall mod reply: There is a limit of 100 emails at a time and 500 e mail per hour limit with your Hughesnet e mail.
Hope that info helps.
-Rocky
That being said, it doesn't sound like that is your problem.. There have been others in the past with issues sending to an aol account.. This one sounds very similar to yours:
https://community.myhughesnet.com/hughesnet/topics/hughesnet_email_being_blocked_by_aol, which in the end refers to another post explaining the How, why, and what to do about it:
https://community.myhughesnet.com/hughesnet/topics/can-t-connect-to-your-e-mail-please-read-especial...I 'll let ya read that last post yourself but for a quick pro qou...
What can you do? Temporary workarounds include accessing mail on a
non-HughesNet connection, or using a 3rd party service such as
http://mail2web.com or
http://myemail.com. However, you can reduce the risk of
blacklisting your IP address by ensuring your system and network are
virus-free.
Hopefully this helps some, personally I use hotmail and have never had any issue, except the occassional spam mail lol. Which can never be completely avoided SMH