Hi,

Op 20/08/2018 om 18:01 schreef davide marchi:

Hi to all i have compiled and installed dovecot 2.3.2.1 on debian 6 with success but now i'm facing a strange problem on communication from postfix installed on server A with dovecot installed on server B (which version is 2.3.2.1). All incoming emails delivered from esternal from server A to server B with LMTP is rejected with this message error

"smtpgw postfix/lmtp[1772]: 6194CA00B3: to=mailto:xxxxxxxxxxxx@mail.cgilfe.it>, relay=192.168.10.50[192.168.10.50]:24, delay=0.02, delays=0/0.01/0.01/0, dsn=5.5.4, status=undeliverable (host 192.168.10.50[192.168.10.50] said: 501 5.5.4 Invalid FROM: Missing domain (in reply to MAIL FROM command))"

I cant identify what is the problem , for now i have bypassed lmtp using smtp but my goal is returning to lmtp that i have used since old versions of dovecot.

Dovecot v2.2. was extremely permissive regarding address syntax. Dovecot v2.3+ tends to be more strict, but if there's really an interoperability problem we can implement a workaround. First I'd like to know what exactly is going on. For some reason, your incoming mails have an envelope "from" address without a domain part, which is normally not allowed and makes little sense for messages exchanged on the internet. Any idea why that may be happening?

Regards,

Stephan.