http://spamhuntress.com/2007/11/05/zywall-og-exchange-update-firmware/ Just another WordPress weblog Wed, 08 Oct 2008 03:43:23 +0000 http://wordpress.org/?v=2.0.7 http://spamhuntress.com/2007/11/05/zywall-og-exchange-update-firmware/#comment-293185 Tue, 04 Dec 2007 21:25:46 +0000 http://spamhuntress.com/2007/11/05/zywall-og-exchange-update-firmware/#comment-293185 Interesting! Last year, I experienced a similar issue with a ZyWall 35. We receive inbound/external mail from many sources and we could no longer receive email from a few domains. For one of these domains, I contacted a system admin. He was able to telnet to our mail servers (Exchange and Sendmail) but didn't see an SMTP greeting before pressing Enter. Eventually I decided to install the latest firmware available for the ZyWall 35--I had previously installed the ZyWall 35 UTM firmware. After installing the latest non-UTM firmware, the problem disappeared. Interesting! Last year, I experienced a similar issue with a ZyWall 35. We receive inbound/external mail from many sources and we could no longer receive email from a few domains. For one of these domains, I contacted a system admin. He was able to telnet to our mail servers (Exchange and Sendmail) but didn’t see an SMTP greeting before pressing Enter. Eventually I decided to install the latest firmware available for the ZyWall 35–I had previously installed the ZyWall 35 UTM firmware. After installing the latest non-UTM firmware, the problem disappeared.

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