>we also saw this problem...after looking at a packet >capture it appeared that the Web server was not >following the TCP rules. The initial SYN packet would >be transmitted and the Web server responded with an >ACK (which was dropped by FW-1 FP3- Unexpected SYN >response).
My mails are not being delivered to "ecosistemas.com.br" because my SMTP server is unable to connect to their MX (200.222.99.34) through the firewall. That is, my firewall (FP3) is dropping all packets to 200.222.99.34 with a "unexpected SYN" message. Notice I said ALL PACKETS!! If someone wants to replicate the problem, try doing "telnet 200.222.99.34 25" through a FP3 firewall to see if it works. (don?t worry, 200.222.99.34 is the MX host for ecosistemas.com.br). Does anyone know how to solve this already? TIA, Fabio. --- Damien Hart <[EMAIL PROTECTED]> wrote: > have you got a few urls we can try to see if anyone > else can replicate it? > > i see some of those errors too but am not sure what > impact they are having, > mostly by people browsing our sites. I would like > to check if i get the > same problem browsing myself. > > Damo > > > > > I tried to reboot the FW but still show this > error. Also can't goto some > web > > sites. the packet will drop by FW. > > > > Check many knowledge base and checkpoint web > sites, didn't found any doc > > related to this case. > > Anyone can help? > > > > Thanks! > > > > -----Original Message----- > > From: Mailing list for discussion of Firewall-1 > > > [mailto:[EMAIL PROTECTED]]On > Behalf Of Dan > > Sickels > > Sent: Monday, November 04, 2002 8:30 PM > > To: [EMAIL PROTECTED] > > Subject: Re: [FW-1] Unexpected SYN repsonse in NG > FP3 > > > > > > I had the same problem. I ended up rebooting the > box and the errors > > went away. Still not sure what had caused it > originally. > > > > Dan Sickels > > Manager Network and Information Systems > > 12A Old Main, University Park, PA 16802 > > PHONE: 814-863-8397 > > [EMAIL PROTECTED] > > > > > > -----Original Message----- > > From: Anthony [mailto:[EMAIL PROTECTED]] > > Sent: Monday, November 04, 2002 1:49 AM > > To: [EMAIL PROTECTED] > > Subject: [FW-1] Unexpected SYN repsonse in NG FP3 > > > > I installed the Checkpoint NG FP3, When I go to > some web sites, the log > > viewer will show " Unexpected SYN response" and > drop the pracket. > > > > I didn't configure any http proxy and it is ok in > FP2. > > > > Anyone can help ?? > > > > Thanks! > > > > ================================================= > > To set vacation, Out Of Office, or away messages, > > send an email to [EMAIL PROTECTED] > > in the BODY of the email add: > > set fw-1-mailinglist nomail > > ================================================= > > To unsubscribe from this mailing list, > > please see the instructions at > > http://www.checkpoint.com/services/mailing.html > > ================================================= > > If you have any questions on how to change your > > subscription options, email > > [EMAIL PROTECTED] > > ================================================= > > > > ================================================= > > To set vacation, Out Of Office, or away messages, > > send an email to [EMAIL PROTECTED] > > in the BODY of the email add: > > set fw-1-mailinglist nomail > > ================================================= > > To unsubscribe from this mailing list, > > please see the instructions at > > http://www.checkpoint.com/services/mailing.html > > ================================================= > > If you have any questions on how to change your > > subscription options, email > > [EMAIL PROTECTED] > > ================================================= > > > > ================================================= > > To set vacation, Out Of Office, or away messages, > > send an email to [EMAIL PROTECTED] > > in the BODY of the email add: > > set fw-1-mailinglist nomail > > ================================================= > > To unsubscribe from this mailing list, > > please see the instructions at > > http://www.checkpoint.com/services/mailing.html > > ================================================= > > If you have any questions on how to change your > > subscription options, email > > [EMAIL PROTECTED] > > ================================================= > > > > > > ================================================= > To set vacation, Out Of Office, or away messages, > send an email to [EMAIL PROTECTED] > in the BODY of the email add: > set fw-1-mailinglist nomail > ================================================= > To unsubscribe from this mailing list, > please see the instructions at > http://www.checkpoint.com/services/mailing.html > ================================================= > If you have any questions on how to change your > subscription options, email > [EMAIL PROTECTED] > ================================================= __________________________________________________ Do you Yahoo!? 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