blake@xxxxxxxx wrote: > I seem to be having trouble sending mail from an FC5 server to > mail.jococourthouse.com. > > The problem manifests itself as extreme slowness, which eventually leads > to a timeout before I can even receive a full welcome prompt from the > remote side. > > I have tested on ~ 10 boxes (different hardware) around the US ranging > from FC5 through FC8 and NONE can telnet to this mx while RH, FC3 RH4, > windows, and cisco gear on the same networks can ALL telnet without a > problem. > > wireshark on the FC5 boxes show that the TCP handshake occurs as normal, > however from then on all I receive from the remote side are 60 byte frames > labeled 'TCP segment of a reassembled PDU' until I eventually receive an > RST from the remote. - A capture on the working boxes looks normal. > > I suspect the problem is related to an IP/TCP change in the kernel or > FC5+, however I have no idea what change could have occurred. Any insight > or recommendations for resolving this problem would be appreciated. > > > Thanks, > -Blake > Dumb question - does it work properly when sending to other mail servers? If so, I suspect that mail.jococourthouse.com is doing an idend request on incoming mail connections, and this request is being dropped instead of rejected by a firewall between the two systems. This option is seldom used any more because it doesn't really provide useful information. (It did when only mainframes were connected to the Internet.) I don't think Fedora even installs an ident daemon by default any more. Mikkel -- Do not meddle in the affairs of dragons, for thou art crunchy and taste good with Ketchup!
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