这是完整的 mail.log
Jul 14 16:48:20 rezocoquin sendmail[5861]: v6EEmKCT005861: from=www-data, size=194, class=0, nrcpts=1, msgid=<[email protected]>, relay=www-data@localhost
Jul 14 16:48:20 rezocoquin sm-mta[5863]: v6EEmKvf005863: from=<[email protected]>, size=419, class=0, nrcpts=1, msgid=<[email protected]>, proto=ESMTP, daemon=MTA-v4, relay=rezocoquin.com [127.0.0.1]
Jul 14 16:48:20 rezocoquin sendmail[5861]: v6EEmKCT005861: [email protected], ctladdr=www-data (33/33), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30194, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (v6EEmKvf005863 Message accepted$
Jul 14 16:48:20 rezocoquin sm-mta[5868]: STARTTLS=client, relay=gmail-smtp-in.l.google.com., version=TLSv1/SSLv3, verify=FAIL, cipher=ECDHE-RSA-AES128-GCM-SHA256, bits=128/128
Jul 14 16:48:20 rezocoquin sm-mta[5868]: v6EEmKvf005863: to=<[email protected]>, ctladdr=<[email protected]> (33/33), delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=120419, relay=gmail-smtp-in.l.google.com. [IPv6:2a00:1450:400c:c07::1b], d$
Jul 14 16:48:20 rezocoquin sm-mta[5868]: v6EEmKvf005863: v6EEmKvf005868: DSN: Service unavailable
Jul 14 16:48:21 rezocoquin sm-mta[5868]: v6EEmKvf005868: to=<[email protected]>, delay=00:00:01, xdelay=00:00:00, mailer=local, pri=30000, dsn=2.0.0, stat=Sent
-> 没有收到电子邮件：有什么想法吗？
答案1
邮件已被您自己的邮件中继服务器接受；Google 的服务器拒绝了来自您的中继服务器的邮件。有关您遇到的问题的详细信息，请参阅此处：Sendmail：DSN：服务不可用
您可以看到您的邮件中继正在使用 IPv6 传递邮件。您的 DNS 服务器可能配置为返回 IPv6 地址，但您的服务器无法通过 IPv6 访问目标服务器。