Comments on: Strange problems with ZyXELs ZyWALL 5 and Exchange 2003 http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/ The experiences of an SMB IT technician Thu, 04 Mar 2010 16:59:32 +0000 http://wordpress.org/?v=2.9.1 hourly 1 By: Don’t buy ZyXEL equipment » Lukas Beeler’s IT Blog » Blog Archive http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/comment-page-1/#comment-3564 Don’t buy ZyXEL equipment » Lukas Beeler’s IT Blog » Blog Archive Thu, 14 May 2009 17:13:11 +0000 http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/#comment-3564 [...] had my share of experiences with ZyXEL equipment, like the ZyWALL vs. Exchange post i did a few years [...] [...] had my share of experiences with ZyXEL equipment, like the ZyWALL vs. Exchange post i did a few years [...]

]]> By: Lukas Beeler http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/comment-page-1/#comment-2415 Lukas Beeler Sat, 05 Jul 2008 14:28:30 +0000 http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/#comment-2415 Hi Gerrit, Thanks for sharing. Might help me in the future. Hi Gerrit,

Thanks for sharing. Might help me in the future.

]]> By: Gerrit-Jan M. http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/comment-page-1/#comment-2409 Gerrit-Jan M. Fri, 04 Jul 2008 10:10:19 +0000 http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/#comment-2409 Hi Ulrik, This week I had reaction from zywall team .. If you're dealing with this problem, give this a try: 1. telnet to the ZyWALL, menu 24, option 8 (de CLI). 2. Give the commando: "sys tos timeout tcpsyn ". 3. the default is 270, change this to 540 or higher.. (so -> 'sys tos timeout tcpsyn 540') Succes! Please visit this site: http://www.caretaker.nl --> this is the best antispam solution EVER! Regards, G.J. Mollenhorst Hi Ulrik,

This week I had reaction from zywall team .. If you’re dealing with this problem, give this a try:

1. telnet to the ZyWALL, menu 24, option 8 (de CLI).
2. Give the commando: “sys tos timeout tcpsyn “.
3. the default is 270, change this to 540 or higher.. (so -> ’sys tos timeout tcpsyn 540′)

Succes! Please visit this site: http://www.caretaker.nl –> this is the best antispam solution EVER!

Regards,
G.J. Mollenhorst

]]> By: Gerrit-Jan M. http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/comment-page-1/#comment-2294 Gerrit-Jan M. Wed, 07 May 2008 11:30:07 +0000 http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/#comment-2294 Hi All, After three weeks, problems seems to be still there. Whenever Exchange begins to queue messages, only workaround available now is to load new firmware in the zywall. After that, things work for a few days. This is not a hardware failure -> I already bought a new zywall5 because of this error. The old one (3 years old) and the new one have exactly the same failures. If anyone has a clue, please contact me. gerritjan123@gmail.com Thanks in advance. Hi All,

After three weeks, problems seems to be still there. Whenever Exchange begins to queue messages, only workaround available now is to load new firmware in the zywall. After that, things work for a few days. This is not a hardware failure -> I already bought a new zywall5 because of this error. The old one (3 years old) and the new one have exactly the same failures.

If anyone has a clue, please contact me. gerritjan123@gmail.com

Thanks in advance.

]]> By: Gerrit-Jan M. http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/comment-page-1/#comment-2266 Gerrit-Jan M. Tue, 22 Apr 2008 13:54:49 +0000 http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/#comment-2266 Hi All, In response to the earlier message. I did a downgrade to version - Version 4.03(XD.1)C0 - and problem seems to be solved. I will leave an additional message on this board when the zywall still has the problem (Only then). So when no new posts, this has fixed it for me. (Highly annoying problem, this one) Gtz, Gerrit-Jan M. Hi All,

In response to the earlier message. I did a downgrade to version – Version 4.03(XD.1)C0 – and problem seems to be solved. I will leave an additional message on this board when the zywall still has the problem (Only then). So when no new posts, this has fixed it for me.

(Highly annoying problem, this one)

Gtz,

Gerrit-Jan M.

]]> By: Gerrit-Jan M. http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/comment-page-1/#comment-2265 Gerrit-Jan M. Tue, 22 Apr 2008 11:59:39 +0000 http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/#comment-2265 Same problem with a Zywall 5 (UTM) here. SBS Exchange 2003 relaying SMTP outbound to ISP SMTP server. After restarting STMP service on the SBS 2003 machine, SMTP seems to work again but after few minutes the Exchange message queue is growing again. After uploading the firmware to V4.04(XD.0) | 03/28/2008 --> 2 hours succes before starting to get into trouble again.. B.t.w. : Antispam on the zywall is NOT activated. Anyone any clue?? Thanks in advance. Same problem with a Zywall 5 (UTM) here. SBS Exchange 2003 relaying SMTP outbound to ISP SMTP server. After restarting STMP service on the SBS 2003 machine, SMTP seems to work again but after few minutes the Exchange message queue is growing again. After uploading the firmware to V4.04(XD.0) | 03/28/2008 –> 2 hours succes before starting to get into trouble again..

B.t.w. : Antispam on the zywall is NOT activated.

Anyone any clue?? Thanks in advance.

]]> By: Andy Wolf http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/comment-page-1/#comment-2184 Andy Wolf Wed, 26 Mar 2008 13:40:40 +0000 http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/#comment-2184 I had the same Problem with a ZyWALL 5. With upgrade to Firmware Version 4.03(XD.1)C0 the Problem is solved! I had the same Problem with a ZyWALL 5.
With upgrade to Firmware Version 4.03(XD.1)C0 the Problem is solved!

]]> By: Paolo Drappo http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/comment-page-1/#comment-2102 Paolo Drappo Thu, 21 Feb 2008 13:37:38 +0000 http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/#comment-2102 Which version of firmware not working? Which version of firmware not working?

]]> By: Polinky Japan http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/comment-page-1/#comment-2082 Polinky Japan Wed, 13 Feb 2008 09:14:34 +0000 http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/#comment-2082 I also same problem on Zywall 70. By updating to 4.03, it fixed!!! I also same problem on Zywall 70.
By updating to 4.03, it fixed!!!

]]> By: Flemming Veggerby http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/comment-page-1/#comment-1973 Flemming Veggerby Tue, 08 Jan 2008 17:25:30 +0000 http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/#comment-1973 Also Zywall 70 (and 5 and 35) Upgraded from ver 4.00 to 4.02(min) solved problem. Also Zywall 70 (and 5 and 35)
Upgraded from ver 4.00 to 4.02(min) solved problem.

]]> By: Ronald Nissley http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/comment-page-1/#comment-1909 Ronald Nissley Mon, 17 Dec 2007 18:01:48 +0000 http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/#comment-1909 Same problem here with a ZyWall 35. Same problem here with a ZyWall 35.

]]> By: BG http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/comment-page-1/#comment-1712 BG Thu, 29 Nov 2007 17:27:55 +0000 http://projectdream.org/wordpress/2007/09/20/strange-problems-with-zyxels-zywall-5-and-exchange-2003/#comment-1712 Just 2 verify. I´ve have had the same problem on 2 locations. Just 2 verify. I´ve have had the same problem on 2 locations.

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