posted 17 December 2002
DRAFT USAP VESSEL EMAIL POLICY
- A per message size filter of
100kB outbound and 75kB inbound will be in effect. This will
prevent extremely large messages from being sent to or from the
ship except via approved accounts and will prevent a users
quota from unwittingly being consumed by a large inbound "spam"
message. 100kB will allow for high-resolution images to be sent,
while protecting them from using their allotment too quickly.
However, these size limits are subject to review and could easily
be adjusted as needed. For a legitimate and approved request,
the limit can be adjusted for a single email transmission, or
for the duration of a cruise as necessary and by individual user
- The MPC and Admin accounts will
have permission to send and receive oversized messages.
- The TEA account and Captain
(these will be special work accounts, not the Captains
personal accounts) will have permission to send but not receive
- Abuse of the oversized email
privilege, defined by the use of the privileged account for personal
email, will result in removal from the privilege account list
and return to the standard size filter.
Special Account Allotments:
- The TEA account and Outreach
account shall have a combined allotment of 250kB/day to cover
sending of pictures and text for TEA events and NSF approved
- The MPC account and Admin account
shall have a specified allotment of 512kB and 1024kB, respectively,
per week to permit necessary email traffic, including but not
limited to, Sitreps, News, Weather Data, special science requests
and emergency software transfers.
- An allotment of 512kB/week shall
be used to cover business /cruise related email sent to and from
RPSC and ECO staff. The RPSC accounts covered by this are: ET,
MT, MST, EMT, and Terascan. The ECO accounts covered by this
are: Captain, Engineer, and Bridge.
- A users email allotment
for a cruise will be based upon the cruise length (plus 4 days
for port call time) multiplied by the current daily quota. Example:
42 day cruise at 25kB/day Þ (42+4) days * 25kB/day = 1150
kB or 1.12 MB.
- Allotments and usage will be
calculated using the compressed file size of each email message
sent from or to the user across the HSD connection at the average
cost per byte for transmissions. The user will be financially
responsible for any usage over the per cruise allotment. Current
transfer rate is approximately 360kB/min of compressed data at
$10/min. Payment shall be made to the MPC in either cash or personal
- The users total off-ship
email usage will be calculated each day, and record of it placed
in their home directory for review of current usage, remaining
allocation, and current user-borne cost.
- Users who have exceeded their
allotment will receive an invoice at the end-of the cruise, both
hardcopy and electronic, showing their usage during the cruise,
the amount they owe and instructions to settle the account with
the MPC. All accounts must be settled on a per cruise basis,
even for users who are remaining aboard for the following cruise.
- Users who do not settle their
bills will have future email access restricted to 3kB/message.
The NSF (Al Sutherland, Pat Smith, and Brian Stone) will be notified
of those violators of the policy.
- RPSC contract employees should
settle their account when receiving their travel fund.
- ECO shall be held responsible
for any outstanding email bills for its employees.
- The PI for each science group
shall be responsible for the email use bill for members of that
science group. The PI will be given a running account of the
email usage of those grantees for whom they are responsible.
- If a user is receiving excessive
(in size or volume) email from a particular address and is unsuccessful
in requesting an end to the email from the sender, email from
the sender shall be blocked at the server in Denver.