Microsoft has issued a fix for users of Exchange Server 2003 who may have problems performing DNS lookups via SMTP.
Microsoft said that the problem comes when the Simple Mail Transport Protocol service incorrectly processes
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this lookup and causes the Inetinfo.exe to crash. This can cause an interruption in the ability for Exchange Server 2003 to send and receive e-mail through the Internet, Microsoft said.
The company added that no e-mail is lost in this process, but some messages being sent
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This SMTP service hiccup affects Exchange Server 2003, Standard and Enterprise Editions, when used with Windows Server 2003, Windows 2000 Server or Windows 2000 Advanced Server, Microsoft said.
Microsoft does not consider the problem a security issue, and to its knowledge, no security exploit related to this bug has occurred, company officials said.
Exchange chat boards are full of people pulling out their hair trying to figure out what is happening. One Exchange expert agreed that the bug was more of a nuisance than a security threat. "It's more bothersome than critical," said Lee Benjamin, chairman of the Boston Area Exchange Server User Group.
Benjamin said the bug has been around for a while but for some reason it's been getting more attention in the past week.
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