I have a problem using reject_unverified_recipient to verify under Exchange 2016 that I don't have with Exchange 2010
Postfix is used to send and receive mail and is between the internet and the internal Exchange Server Now, when an internet user send an email to our domain postfix verify it making an rcpt to to our exchange using reject_unverified_recipient instruction This worked well with Exchange 2010 but now with Exchange 2016 doesn't work. Exchange 2016 needs the installation of Recipient Filter Agent and obviously I installed it. Now we have Frontend Transport that answer at port 25 and verify recipient at DATA phase and the Hub Transport that answer at port 2525 and verify recipient at RCPT TO Here Exchange 2016 at port 25 that verify unknown recipient at DATA phase telnet 10.1.1.126 25 220 GEMMA.gruppocomet.net Microsoft ESMTP MAIL Service ready helo me 250 GEMMA.gruppocomet.net Hello [10.2.6.4] mail from:e...@ext.com 250 2.1.0 Sender OK rcpt to:doesntex...@gruppocomet.it 250 2.1.5 Recipient OK data 354 Start mail input; end with <CRLF>.<CRLF> some data . 550 5.1.10 RESOLVER.ADR.RecipientNotFound; Recipient not found by SMTP address lookup Here Exchange 2016 at port 2525 that verify unknown recipient at RCPT TO phase telnet 10.1.1.126 2525 220 GEMMA.gruppocomet.net Microsoft ESMTP MAIL Service ready helo me 250 GEMMA.gruppocomet.net Hello [10.2.6.4] mail from:e...@ext.com 250 2.1.0 Sender OK rcpt to:doesntex...@gruppocomet.it 550 5.1.10 RESOLVER.ADR.RecipientNotFound; Recipient not found by SMTP address lookup When I connect to a Postfix configured with reject_unverified_recipient it doesn't work I tried to transport domain to Exchange at port 2525 and at port 25 using the parameter smtp_address_verify_target = data Postfix answer OK at RCPT TO of doesntex...@gruppocomet.it<mailto:doesntex...@gruppocomet.it> and need some time to answer, so I suppose that it make the call to Exchange RCPT TO is immediate if I remove reject_unverified_recipient Nicola Piazzi CED - Sistemi COMET s.p.a. Via Michelino, 105 - 40127 Bologna - Italia Tel. +39 051.6079.293 Cell. +39 328.21.73.470 Web: www.gruppocomet.it<http://www.gruppocomet.it/> [Descrizione: gc]
