ablaauwgeers@minsk:/var/log$ tail mail.log Oct 25 23:44:50 minsk postfix/smtpd[989894]: disconnect from mail.serv.os3.nl[145.100.96.25] ehlo=2 starttls=1 mail=1 rcpt=1 data=1 quit=1 commands=7 Oct 25 23:45:09 minsk postfix/cleanup[989888]: 5C80D82194: message-id=<> Oct 25 23:45:09 minsk postfix/qmgr[989770]: 5C80D82194: from=, size=282, nrcpt=1 (queue active) Oct 25 23:45:09 minsk postfix/relay/smtp[989896]: connect to mail.reims.prac.os3.nl[145.100.104.122]:25: Connection refused Oct 25 23:45:09 minsk postfix/relay/smtp[989896]: connect to mail.reims.prac.os3.nl[2001:610:158:1043:145:100:104:122]:25: Network is unreachable Oct 25 23:45:09 minsk postfix/relay/smtp[989896]: 5C80D82194: to=, relay=none, delay=57, delays=57/0/0/0, dsn=4.4.1, status=deferred (connect to mail.reims.prac.os3.nl[2001:610:158:1043:145:100:104:122]:25: Network is unreachable) Oct 25 23:45:17 minsk postfix/smtpd[989830]: disconnect from shell.students.os3.nl[145.100.102.9] ehlo=1 mail=1 rcpt=1 data=1 quit=1 commands=5 Oct 25 23:48:37 minsk postfix/anvil[989826]: statistics: max connection rate 2/60s for (smtp:145.100.96.25) at Oct 25 23:44:50 Oct 25 23:48:37 minsk postfix/anvil[989826]: statistics: max connection count 1 for (smtp:145.100.102.9) at Oct 25 23:43:48 Oct 25 23:48:37 minsk postfix/anvil[989826]: statistics: max cache size 2 at Oct 25 23:44:20 ablaauwgeers@minsk:/var/log$ sudo /var/spool/postfix/defer sudo: /var/spool/postfix/defer: command not found ablaauwgeers@minsk:/var/log$ sudo tree /var/spool/postfix/defer /var/spool/postfix/defer ├── 1 │   └── 17EB0821A6 ├── 2 │   └── 26EF182195 └── 5 └── 5C80D82194 3 directories, 3 files {{:hobby:postfix:schermafbeelding_2020-10-25_235116.png?800|}}