I believe the R conflicts with an OpenSSL command-- try 'rcpt to' rather than 
'RCPT TO'


> On Aug 26, 2015, at 10:00 PM, Alan Cheng <[email protected]> wrote:
> 
> 
> Hello,
> 
> My OpenSMTPD is having problems sending out emails. It gets a error message 
> saying somthing like "received invalid command: "RCPT 
> TO:<[email protected]>".
> Turned on debugging but still no clue. 
> Anyone has any pointers? thanks!
> 
> Here is related log:
> 
> root@cactus:/usr/local/etc# tail -f /var/log/mail.log
> 
> Aug 27 01:51:30 cactus smtpd[12220]: debug: smtp: new client on listener: 
> 0x953f50
> Aug 27 01:51:30 cactus smtpd[12220]: smtp-in: session e228d1ddb97126ff: 
> connection from host 54.209.64.223.static.js.chinamobile [223.64.209.54] 
> established
> Aug 27 01:51:31 cactus dovecot: imap(acheng): Connection closed in=23 out=501
> Aug 27 01:51:31 cactus smtpd[12220]: debug: session_start_ssl: switching to 
> SSL
> Aug 27 01:51:31 cactus smtpd[12220]: debug: pony: rsae_priv_enc
> Aug 27 01:51:31 cactus smtpd[12220]: smtp-in: session e228d1ddb97126ff: TLS 
> started version=TLSv1/SSLv3 (TLSv1.2), cipher=ECDHE-RSA-AES128-GCM-SHA256, 
> bits=128
> Aug 27 01:51:31 cactus smtpd[12220]: smtp-in: session e228d1ddb97126ff: 
> received invalid command: "RCPT TO:<[email protected]>"
> 
> And here is my smtpd.conf:
> 
> pki cactus.keda.io certificate "/etc/ssl/private/cactus.keda.io.crt"
> pki cactus.keda.io key "/etc/ssl/private/cactus.keda.io.key"
> 
> listen on localhost
> listen on eth0 tls pki cactus.keda.io auth-optional
> table aliases file:/usr/local/etc/mail/aliases
> table secrets file:/usr/local/etc/mail/secrets
> 
> accept for local alias <aliases> deliver to maildir 
> "/var/mail/%{user.username}/"
> accept from any for domain keda.io alias <aliases> deliver to maildir 
> "/var/mail/%{user.username}/"
> accept for any relay
> 
> OS is Ubuntu 15.04 and OpenSMTPD is compiled from 5.7.1 portable release.
> 
> Thanks,
> Alan

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