Yes you were right, I asked also at sendmail and they also told me the smtp should stay. Seems to be working now with lmtp and sieve.
-----Original Message----- To: Dovecot Subject: RE: sendmail -> lmtp 501 5.6.0 Data format error
On Thu, 28 Nov 2019, Marc Roos wrote:
When changing in a working setup sendmail.mc
From this MAILER(smtp)dnl MAILER(procmail)dnl
To this FEATURE(
local_lmtp',[IPC]',`FILE /var/run/dovecot/lmtp')dnl MAILER(local)dnlI am getting these errors '501 5.6.0 Data format error' and ' Unrecognized host name'. ... Eg. When I send email from gmail it looks like this (reason: 553 5.1.2 xxxx@gmail.com... Unrecognized host name gmail.com.)
Just a stab (I toyed around with LMTP for a while and probably will eventually use it), but you probably need to retain
MAILER(smtp)dnlSendmail has semi-cryptic documentation on what it does
https://www.sendmail.org/~ca/email/doc8.12/cf/m4/mailers.htmlJoseph Tam jtam.home@gmail.com