Hello Davide

I found an problem in xmail when re-trying to connect to mx with multiple
ips

Here is a sample :
Assuming domain XX.com have this dns setup

xx.com  mx 10   mx10.xx.com
xx.com mx 20    mx20.xx.com

mx10.xx.com     A       10.10.10.1
mx10.xx.com     A       10.10.10.2
mx10.xx.com     A       10.10.10.3

mx20.xx.com     A       20.20.20.1
mx20.xx.com     A       20.20.20.2

supposing xmail have now to send a mail @xx.com
on first try it use mx10.xx.com at 10.10.10.1 : now the tcp connection don't
work
then os same first try xmail use mx20 at 20.20.20.2 : suppose tcp connection
don't work too !

What i see in a trace is that for ALL the others retries for this mail,
xmail retries ONLY on SAME ips, 10.10.10.1 and 20.20.20.2
It never retry on others mx's ips !! And because there was no response from
these two ips, mail bounced back to sender after all possible retries :-/
(i checked the others ips, they responded correctly :-/ but xmail never
tried them ...)

I think this is a major bug :(

To temporaly bypass this problem I had to add an smtpfwd entry to specify
'working' ips to bypass the 'bad' ips that was simply in maintenance mode
for some days

If you want, I have a trace dump showing the problem. Just tell me where to
send it if you need it.


Francis





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