timed out while sending message body
today i started receiving complaints that with some mails the attachment
was not received or the mails not received at all.
this seems to be happening so far only with 2 receiving mail servers in
China, these 2 have been receiving mail from my side for years already
without any problems and the messages below only started appearing today
i use a zimbra setup (which uses postfix) and did no changes to the
setup at least for the last month, i restarted the server today just in
case but this had no result.
Aug 20 14:02:26 mailro postfix/smtp: 3A2F5352D4CE:
delay=3140, delays=2403/0.01/3.9/733, dsn=4.4.2, status=deferred
(conversation with mail.example.com[18.104.22.168] timed out while
sending message body)
anybody has a clue or similar experience?