I'm sorry
Now i can reproduce the error. It really seems to be a special character.
First of all the logfile. I'm a bit confused about the colon in path. But if i interpret that as slash:
To reproduce i created a new mail address with a autoresponder (nothing special - just the word "Antwort") and send an email via php script to that address. In the mail-body i used some wired special chars.
(Ansi-coded file. Hex: FDFF)
What it does:
Code: /var/log/mail.log
- Jan 23 09:25:58 hosting5 postfix/pickup[16549]: 3796160B11: uid=1027 from=<webmaster@test.tld>
- Jan 23 09:25:58 hosting5 postfix/cleanup[17055]: 3796160B11: message-id=<20170123082558.3796160B11@hosting5.mydomain.de>
- Jan 23 09:25:58 hosting5 spamd[22072]: spamd: connection from ip6-localhost [::1]:42650 to port 783, fd 6
- Jan 23 09:25:58 hosting5 spamd[22072]: spamd: processing message <20170123082558.3796160B11@hosting5.mydomain.de> for responder@test.tld:114
- Jan 23 09:25:58 hosting5 spamd[22072]: spamd: clean message (-1.0/3.5) for responder@test.tld:114 in 0.3 seconds, 503 bytes.
- Jan 23 09:25:58 hosting5 spamd[22072]: spamd: result: . -1 - ALL_TRUSTED scantime=0.3,size=503,user=responder@test.tld,uid=114,required_score=3.5,rhost=ip6-localhost,raddr=::1,rport=42650,mid=<20170123082558.3796160B11@hosting5.mydomain.de>,autolearn=ham autolearn_force=no
- Jan 23 09:25:58 hosting5 postfix/qmgr[16337]: 3796160B11: from=<webmaster@test.tld>, size=393, nrcpt=2 (queue active)
- Jan 23 09:25:58 hosting5 dovecot: lda(responder@test.tld): msgid=<20170123082558.3796160B11@hosting5.mydomain.de>: saved mail to INBOX.
- Jan 23 09:25:58 hosting5 postfix/pipe[17060]: 3796160B11: to=<responder@test.tld>, relay=dovecot, delay=0.29, delays=0.28/0/0/0.01, dsn=2.0.0, status=sent (delivered via dovecot service)
- Jan 23 09:25:58 hosting5 spamd[26503]: prefork: child states: II
- Jan 23 09:25:58 hosting5 postfix/pipe[17059]: 3796160B11: to=<responder@imscp-arpl.test.tld>, orig_to=<responder@test.tld>, relay=imscp-arpl, delay=0.49, delays=0.28/0/0/0.21, dsn=5.3.0, status=bounced (Command died with status 255: "/var/www/imscp/engine/messenger/imscp-arpl-msgr". Command output: [_[0;31mFATAL_[0m] main: Can't call method "isa" on an undefined value at /usr/share/perl5/MIME/Parser/Reader.pm line 186, <STDIN> line 1. [_[0;31mERROR_[0m] Could not to open log file `/var/log/imscp/imscp-arpl-msgr:imscp-arpl-msgr.log' for writting: Permission denied )
- Jan 23 09:25:58 hosting5 postfix/cleanup[17055]: AC25260B76: message-id=<20170123082558.AC25260B76@hosting5.mydomain.de>
- Jan 23 09:25:58 hosting5 postfix/bounce[17064]: 3796160B11: sender non-delivery notification: AC25260B76
- Jan 23 09:25:58 hosting5 postfix/qmgr[16337]: AC25260B76: from=<>, size=3080, nrcpt=1 (queue active)
- Jan 23 09:25:58 hosting5 postfix/qmgr[16337]: 3796160B11: removed
- Jan 23 09:25:58 hosting5 postfix/pickup[16549]: B27F360B11: uid=999 from=<MAILER-DAEMON>
- Jan 23 09:25:58 hosting5 dovecot: lda(tim@mydomain.de): sieve: msgid=<20170123082558.AC25260B76@hosting5.mydomain.de>: forwarded to <tim@prvaddr.de>
- Jan 23 09:25:58 hosting5 postfix/cleanup[17055]: B27F360B11: message-id=<20170123082558.AC25260B76@hosting5.mydomain.de>
- Jan 23 09:25:58 hosting5 spamd[22072]: spamd: connection from ip6-localhost [::1]:42654 to port 783, fd 6
- Jan 23 09:25:58 hosting5 dovecot: lda(tim@mydomain.de): sieve: msgid=<20170123082558.AC25260B76@hosting5.mydomain.de>: stored mail into mailbox 'INBOX.' (INBOX)
- Jan 23 09:25:58 hosting5 postfix/pipe[17060]: AC25260B76: to=<tim@mydomain.de>, orig_to=<webmaster@test.tld>, relay=dovecot, delay=0.03, delays=0/0/0/0.03, dsn=2.0.0, status=sent (delivered via dovecot service)
- Jan 23 09:25:58 hosting5 postfix/qmgr[16337]: AC25260B76: removed
- Jan 23 09:25:58 hosting5 spamd[22072]: spamd: processing message <20170123082558.AC25260B76@hosting5.mydomain.de> for tim@prvaddr.de:114
- Jan 23 09:25:59 hosting5 spamd[22072]: spamd: clean message (-0.2/3.5) for tim@prvaddr.de:114 in 0.3 seconds, 3372 bytes.
- Jan 23 09:25:59 hosting5 spamd[22072]: spamd: result: . 0 - ALL_TRUSTED,DKIM_ADSP_NXDOMAIN scantime=0.3,size=3372,user=tim@prvaddr.de,uid=114,required_score=3.5,rhost=ip6-localhost,raddr=::1,rport=42654,mid=<20170123082558.AC25260B76@hosting5.mydomain.de>,autolearn=no autolearn_force=no
- Jan 23 09:25:59 hosting5 postfix/qmgr[16337]: B27F360B11: from=<>, size=3300, nrcpt=1 (queue active)
- Jan 23 09:25:59 hosting5 postfix/smtp[17070]: B27F360B11: to=<tim@prvaddr.de>, relay=smtp.rzone.de[81.169.145.98]:25, delay=0.49, delays=0.38/0/0.05/0.06, dsn=2.1.5, status=sent (250 2.1.5 OK mail delivered with id Y0b9c7t0N8PxTKc)
- Jan 23 09:25:59 hosting5 postfix/qmgr[16337]: B27F360B11: removed
I'm quite sure that this first happened after the update from 1.3.8 to 1.3.16.