Deferred: Connection reset


FC3 running default sendmail as supplied with package.

I have a customer who normally has no problems sending emails. however now his emails are reporting Deferred: Connection reset by

I to get the same response if i use the same mail server.

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Is his isp? Why is he using it as a relay?
obantecAuthor Commented:

no its not his ISP. he is sending thru my mail server and its my servers maillog that shows the error.

he is posting to a list or both of which report the error.

owensleftfootCommented: is an MS box running InterScan anti-virus software - the problem is probably at their end :)

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