I have three email addresses that all resolve to the same GMail account (@gmail.com) through postfix on an Ubuntu VM. Two of these are working fine, but since my last system upgrade the third has stopped forwarding.
Here are the errors and messages from my postfix log;
Jan 15 20:45:47 FromDust postfix/smtp[10519]: fatal: unknown service: smtp/tcp
Jan 15 20:45:48 FromDust postfix/master[1189]: warning: process /usr/lib/postfix/smtp pid 10516 exit status 1
Jan 15 20:45:48 FromDust postfix/master[1189]: warning: /usr/lib/postfix/smtp: bad command startup -- throttling
Jan 15 20:45:48 FromDust postfix/qmgr[1203]: warning: private/smtp socket: malformed response
Jan 15 20:45:48 FromDust postfix/master[1189]: warning: process /usr/lib/postfix/smtp pid 10517 exit status 1
Jan 15 20:45:48 FromDust postfix/qmgr[1203]: warning: transport smtp failure -- see a previous warning/fatal/panic logfile record for the problem description
I can't understand why smtp is misbehaving, and why this is only causing an issue with the one email address. Can anyone please help me diagnose this issue?