> -----Original Message----- > From: owner-postfix-us...@postfix.org [mailto:owner-postfix- > us...@postfix.org] On Behalf Of Wietse Venema > Sent: Thursday, August 29, 2013 12:37 PM > To: Postfix users > Subject: Re: Exchange 2010 and recipient verification > > Scappatura Rocco: > > Aug 29 11:23:56 mailgw postfix/smtp[17683]: 6FF3AD5C79: > to=<davide.dac...@recipientdomain.it>, > relay=xxx.yyy.www.zzz[xxx.yyy.www.zzz]:25, delay=0.03, > delays=0.01/0.01/0.01/0.01, dsn=4.4.2, status=undeliverable (lost > connection with xxx.yyy.www.zzz[xxx.yyy.www.zzz] while sending RCPT TO) > > > > It seems that in the latter case Exchange fails to respond to the > > SMTP commands MAIL and RCPT. > > > > Could someone tell why this happens? How can I solve this? What > > have to be done eventually on the downstream server side? > > This could be a feature where the Exchange drops connections from > clients that send too much mail to non-existent recipients. > > Wietse
Thank you Wietse, I will try to instruct the postmaster to configure Exchange so that sender 'double-bou...@mailgw.mydomain.tld' is whitelisted. Regards, rocsca
