RE: SOLVED: SMTP transaction interrupted

2008-11-05 Thread Rocco Scappatura
> > Here is one event in a tcpdump file that I received a few hours > > ago (full context is below the signature): > > > > 10:49:57.930285 80.74.176.142.25 > 217.11.85.59.2528: . ack > > 1998901 win 32767 (DF) > > > > What happens is that the receiver (80.74.176.142) says: > > > > I ha

Re: SOLVED: SMTP transaction interrupted

2008-11-04 Thread J Sloan
Wietse Venema wrote: > Wietse Venema: > >> I don't know if this is a problem with Windows TCP/IP, or if this >> is a problem with a firewall on the client side. Reportedly, some >> firewalls randomize TCP sequence numbers but don't update the >> sequence numbers in SACK fields. That would be a

Re: SOLVED: SMTP transaction interrupted

2008-11-04 Thread Wietse Venema
Wietse Venema: > I don't know if this is a problem with Windows TCP/IP, or if this > is a problem with a firewall on the client side. Reportedly, some > firewalls randomize TCP sequence numbers but don't update the > sequence numbers in SACK fields. That would be a sure way to mess > up TCP. Quot

Re: SOLVED: SMTP transaction interrupted

2008-11-04 Thread Wietse Venema
Wietse: > Here is one event in a tcpdump file that I received a few hours > ago (full context is below the signature): > > 10:49:57.930285 80.74.176.142.25 > 217.11.85.59.2528: . ack > 1998901 win 32767 (DF) > > What happens is that the receiver (80.74.176.142) says: > > I have recei

Re: SOLVED: SMTP transaction interrupted

2008-11-04 Thread Rocco Scappatura
> Rocco Scappatura: >> > > > I think I have solved the mystery. But I can offer you only a >> > > > workaround, to turn off selective ACK support. >> > > > >> > > > Here is one event in a tcpdump file that I received a few hours >> > > > ago (full context is below the signature): >> > > > >> > >

Re: SOLVED: SMTP transaction interrupted

2008-11-04 Thread Wietse Venema
Rocco Scappatura: > > > > I think I have solved the mystery. But I can offer you only a > > > > workaround, to turn off selective ACK support. > > > > > > > > Here is one event in a tcpdump file that I received a few hours > > > > ago (full context is below the signature): > > > > > > > > 10:49

RE: SOLVED: SMTP transaction interrupted

2008-11-04 Thread Rocco Scappatura
> > > I think I have solved the mystery. But I can offer you only a > > > workaround, to turn off selective ACK support. > > > > > > Here is one event in a tcpdump file that I received a few hours > > > ago (full context is below the signature): > > > > > > 10:49:57.930285 80.74.176.142.25 > 21

Re: SOLVED: SMTP transaction interrupted

2008-11-04 Thread Wietse Venema
Rocco Scappatura: > > I think I have solved the mystery. But I can offer you only a > > workaround, to turn off selective ACK support. > > > > Here is one event in a tcpdump file that I received a few hours > > ago (full context is below the signature): > > > > 10:49:57.930285 80.74.176.142.2

RE: SOLVED: SMTP transaction interrupted

2008-11-04 Thread Rocco Scappatura
> I think I have solved the mystery. But I can offer you only a > workaround, to turn off selective ACK support. > > Here is one event in a tcpdump file that I received a few hours > ago (full context is below the signature): > > 10:49:57.930285 80.74.176.142.25 > 217.11.85.59.2528: . ack >

SOLVED: SMTP transaction interrupted

2008-11-04 Thread Wietse Venema
I think I have solved the mystery. But I can offer you only a workaround, to turn off selective ACK support. Here is one event in a tcpdump file that I received a few hours ago (full context is below the signature): 10:49:57.930285 80.74.176.142.25 > 217.11.85.59.2528: . ack 1998901 w