Thanks! I am now doing it like this cat test.msg | /usr/libexec/dovecot/lmtp
[@~]# cat test.msg MAIL FROM:<root> RCPT TO:<test> DATA Subject: AAA subject 977 This is the message 977 body . -----Original Message----- Subject: Re: How to send a test message directly to lmtp, to test proxying On 12.11.2019 15.26, Marc Roos via dovecot wrote: > > How to send a test message directly to lmtp, to test proxying? Using LMTP protocol: LHLO localhost MAIL FROM:<me> RCPT TO:<you> DATA ... . Aki