Ubuntu 16.04與sendmail-sender地址無效問題

Question

我試圖從Unix機箱發送電子郵件。它正在工作較早，但現在不是，我想我與/etc/hosts進一步混淆了。下面是測試結果：

echo "Subject: sendmail test" | sendmail -v exp@gmail.com 
exp@gmail.com... Connecting to [127.0.0.1] via relay... 
220 hugheseurope.com ESMTP Sendmail 8.15.2/8.15.2/Debian-3; Thu, 24 Aug 2017 22:29:12 +0200; (No UCE/UBE) logging access from: localhost(OK)-localhost [127.0.0.1] 
>>> EHLO hugheseurope.com 
250-hugheseurope.com Hello localhost [127.0.0.1], pleased to meet you 
250-ENHANCEDSTATUSCODES 
250-PIPELINING 
250-EXPN 
250-VERB 
250-8BITMIME 
250-SIZE 
250-DSN 
250-ETRN 
250-AUTH DIGEST-MD5 CRAM-MD5 
250-DELIVERBY 
250 HELP 
>>> VERB 
250 2.0.0 Verbose mode 
>>> MAIL From:<hnsuser@hugheseurope.com> SIZE=23 AUTH=hnsuser@hugheseurope.com 
250 2.1.0 <hnsuser@hugheseurope.com>... Sender ok 
>>> RCPT To:<exp@gmail.com> 
>>> DATA 
250 2.1.5 <immadolev@gmail.com>... Recipient ok 
354 Enter mail, end with "." on a line by itself 
>>> . 
050 <exp@gmail.com>... Connecting to gmail-smtp-in.l.google.com. via esmtp... 
050 220 mx.google.com ESMTP 40si3960062wrz.258 - gsmtp 
050 >>> EHLO hugheseurope.com 
050 250-mx.google.com at your service, [192.168.1.1] 
050 250-SIZE 157286400 
050 250-8BITMIME 
050 250-STARTTLS 
050 250-ENHANCEDSTATUSCODES 
050 250-PIPELINING 
050 250-CHUNKING 
050 250 SMTPUTF8 
050 >>> STARTTLS 
050 220 2.0.0 Ready to start TLS 
050 >>> EHLO hugheseurope.com 
050 250-mx.google.com at your service, [192.168.1.1] 
050 250-SIZE 157286400 
050 250-8BITMIME 
050 250-ENHANCEDSTATUSCODES 
050 250-PIPELINING 
050 250-CHUNKING 
050 250 SMTPUTF8 
050 >>> MAIL From:<hnsuser@scan@hugheseurope.com> SIZE=310 
050 553-5.1.2 The sender address <hnsuser@scan@hugheseurope.com> is not a valid 
050 553 5.1.2 RFC-5321 address. 40si3960062wrz.258 - gsmtp 
050 <hnsuser@hugheseurope.com>... Connecting to local... 
050 <hnsuser@hugheseurope.com>... Sent 
250 2.0.0 v7OKTCHO001397 Message accepted for delivery 
exp@gmail.com... Sent (v7OKTCHO001397 Message accepted for delivery) 
Closing connection to [127.0.0.1] 
>>> QUIT 
221 2.0.0 hugheseurope.com closing connection 

從我在哪裏得到這個行：爲什麼現在hnsuser @掃描@ hugheseurope.com？

050 >>> MAIL From:<hnsuser@scan@hugheseurope.com> SIZE=310 
     050 553-5.1.2 The sender address <hnsuser@scan@hugheseurope.com> is not a valid 

而且下面還有：

Aug 24 22:29:12 hugheseurope.com sm-mta[1397]: v7OKTCHO001397: from=<hnsuser@hugheseurope.com>, size=310, class=0, nrcpts=1, msgid=<201708242029.v7OKTCdj001396@hugheseurope.com>, proto=ESMT 
Aug 24 22:29:12 hugheseurope.com sm-mta[1397]: STARTTLS=client, relay=gmail-smtp-in.l.google.com., version=TLSv1.2, verify=FAIL, cipher=ECDHE-RSA-AES128-GCM-SHA256, bits=128/128 
Aug 24 22:29:12 hugheseurope.com sm-mta[1397]: v7OKTCHO001397: to=<exp@gmail.com>, ctladdr=<hnsuser@hugheseurope.com> (1000/1000), delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=3 
Aug 24 22:29:12 hugheseurope.com sm-mta[1397]: v7OKTCHO001397: v7OKTCHP001397: DSN: Data format error 

Answer 1

以root的身份執行下面的測試腳本：

#!/bin/sh 
/usr/sbin/sedndmail -d60.5 -bt <<END 
/tryflags es 
/try esmtp hnsuser@hugheseurope.com 
END 

應該減少 「嫌疑名單」。