Using Lotus Notes with the internet passthrough, via a home Comcast cable IP connection, and trying to send any message over 2MB will result in a bunch of IP reset (RSET) commands sent by the Comcast blocking system which blocks the message from being sent.
We have received 2 calls in the last week regarding this issue, and 4 other tech people with Comcast cable modems have confirmed that sending attachments over 2MB no longer works. The error received is the following:
"Remote system no longer responding: [Server name] mail.box"
If you try to send a message just under 2MB you might see the following:
"Mail was successfully submitted for delivery but a copy has not yet been saved in your mail file due to server not responding"
Has anyone else received complaints from home / laptop Notes users about this issue?
UPDATE: This appears to be confirmed by a posting at www.dslreports.com which discusses Comcast's use of a filtering product called "Sandvine":
http://www.dslreports.com/forum/r18323368-Comcast-is-using-Sandvine-to-manage-P2P-Connections
2 comments:
I started noticing this issue with my users in the North East region on Comcast also. My west coast users are still working OK over 2MB. I don't have a workaround for these guys other than using ftp for the attachments.
Jeff, thanks for the feedback. IBM is aware of this issue and may be developing a workaround. Stay tuned. In the meantime, why don't you help put pressure on IBM by giving them a call about this. They are willing to work on it whereas Comcast denies doing anything to cause this, which limits any sort of fix from their end.
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