I have noticed in most deliveries, servers are issuing two ehlo commands. For 
example:

  postfix/smtpd[232271]: disconnect from talvi.dovecot.org[94.237.105.223] 
ehlo=2 starttls=1 mail=1 rcpt=1 data=1 quit=1 commands=7

Is this an indication that something might not be configured correctly to cause 
servers to have to retry? Or is it normal for servers to use ehlo twice? I did 
a quick telnet connection to see what the server is announcing:

  220 mail.example.com ESMTP Postfix
  ehlo test.example.com
  250-mail.example.com
  250-PIPELINING
  250-SIZE 30720000
  250-STARTTLS
  250-ENHANCEDSTATUSCODES
  250-8BITMIME
  250-SMTPUTF8
  250 CHUNKING

Is anything missing? Any idea why the ehlo=2 is on most deliveries?
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