On Tue, Apr 13, 1999 at 10:55:43AM +1200, Karl Lellman wrote:
> I have a customer who runs Qmail 1.03 on RedHat Linux 5.1 as a SMTP relay
> between the internet and their internal MS Exchange server.
>
> They have started to encounter delivery and reception problems with a couple
> of sites and the only thing I can narrow it down to is that these sites want
> to use ESMTP.
What are the delivery and reception problems? What's in the logs? They
simultaneously start to have both delivery and reception problems with the same
site?
> They have been able to send and received emails from these sites fine up
> until about 4-6 weeks ago. Are there any known issues with ESMTP? Has a
> new version of Sendmail been released recently that does something different
> with ESMTP? One person that we have talked to said it might be a problem
> with qmail not being able to deal with two 220 responses?
qmail-remote shouldn't have any problems with properly constructed multi-line
responses. qmail-remote will read the response code from the first line of the
response, and then just chew up and ignore the rest of the lines. The remote
end could send a hundred consecutive 220 responses if it did it correctly.
> The customers mail server is 'mail.renaissance.co.nz', one of the SMTP
> servers that they are having trouble with is 'mail.compaq.com'.
For a typical problematic message, what do the logs say?
Chris
