May I ask to add receiving smtp server mail queue id to sieve 'sent vacation response' log line?
Now: 2014-05-09T15:04:32+02:00 name/ip dovecot: lmtp(8164, user1@domain): YvJFLVbSbFPkHwAASpgOhg: sieve: msgid=<000301cf6b87$36be4570$a43ad050$@us.edu.pl> size=46850: sent vacation response to <user2@domain> Asked for something like this: 2014-05-09T15:04:32+02:00 name/ip dovecot: lmtp(8164, user1@domain): YvJFLVbSbFPkHwAASpgOhg: sieve: msgid=<000301cf6b87$36be4570$a43ad050$@us.edu.pl> size=46850: sent vacation response to <user2@domain> (smtp:[ip]:port): 250 2.0.0 Ok: queued as mailqueueid) <<< In case there are more than one vacation response recipients there is no way to identify who had received the response and who hadn't. Thanks. MU
smime.p7s
Description: Kryptograficzna sygnatura S/MIME