Karl Dahlke writes:
Our local isp suddenly requires every smtp to authenticate. No warning, just suddenly 550 errors. I changed my client, no problem. Thus I am sending this mail out to you. But I can't figure out how to change courier, so at present, all the users that it supports can't send any mail out.I have set esmtpauthclient isp login password The isp matches the isp in esmtproutes, which has been working for ages. I tried setting AUTH_REQUIRED to 0 or 1 in esmtpd. Nothing works. Monitoring traffic shows courier begins with ehlo eklhad not helo eklhad so I thought it was on the right track. It gets back all the 250 messages, including 250-AUTH LOGIN PLAIN But then after 250 ok it jumps right into Mail From
That indicates that the hostname in esmtpauthclient is not set correctly. Double check the contents of esmtpauthclient.
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