George wrote:
Thanks for the quick response, unfortunately, it did not fix the issue.
I modified spfbehavior and changed the value to 1. I then did qmailctl
restart . Is that sufficient?
The problem is still there. If you look at the log in my original mail
there appears to be
a 5 minute pause between CHKUSR accepting sender and the remote server
giving up and sending an [EOF].
The SPF error appears after this and therefore I suspect it is not the
root of the issue.
I did not look at the times, no. With that long of a lag, my next
suspect would be a DNS issue. Try checking their info (nslookup their
MX records, try to query the RBLs, etc.) from the mail server and see if
there is an extremely long lag in DNS lookups.
Is this a heavily loaded server?
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