We're developing a substantial backlog for MSN.com: $ lscp show queue /sum /dest=msn.com SMTP entries: -#Rcp. -#Msg ---Size--- MRt -Oldest msg-- ------------Destination-------------- 1489 374 1396323 0 0 03:18:01 MSN.COM ------ ----- ---------- --- ------------- ------------------------------------- 1489 374 1396323 1 destination(s) The following is consistent with what I'm seeing in the logs. It looks like a block to me, but I suppose they might just be broken. $ lscp resolve /connect msn.com 15:21:04 MX query for MSN.COM 15:21:04 trying (via UDP) DNS server 149.68.16.12 status = %LSMTP-S-OK, Ok cname = MSN.COM mailers: smtp-gw-4.MSN.COM 20 207.46.181.13 15:21:04 connecting to smtp-gw-4.MSN.COM 15:21:04 error reading from network 15:21:04 status = %SYSTEM-F-LINKDISCON, network partner disconnected logical link -Kary