我正在尝试从我的 RedHat 5.9 机器发送邮件。所以命令看起来像这样：
echo "Test mail" | mail -s "test" [email protected]
最终我会收到如下错误邮件：
> The original message was received at Wed, 10 Jan 2018 09:00:00 +0200
> from localhost.localdomain [127.0.0.1]
>
> ----- The following addresses had permanent fatal errors -----
> <[email protected]>
> (reason: 553 #5.1.8 Domain of sender address <[email protected]> does not exist)
>
> ----- Transcript of session follows ----- ... while talking to
> technion-ac-il.mail.protection.outlook.com.:
> >>> MAIL From:<[email protected]> SIZE=619 <<< 553 #5.1.8 Domain of sender address <[email protected]> does not
> exist 501 5.6.0 Data format error
环顾网络让我找到了类似的解决方案这里所以我编辑 /etc/mail/domaintable 文件：
*.technion.ac.il technion.ac.il
比我在文件夹中尝试过的：
make
service sendmail restart
** 编辑 **
> dig technion.ac.il
>
> ; <<>> DiG 9.3.6-P1-RedHat-9.3.6-20.P1.el5_8.2 <<>> technion.ac.il ;;
> global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode:
> QUERY, status: NOERROR, id: 9356 ;; flags: qr rd ra; QUERY: 1, ANSWER:
> 1, AUTHORITY: 9, ADDITIONAL: 0
>
> ;; QUESTION SECTION: ;technion.ac.il. IN A
>
> ;; ANSWER SECTION: technion.ac.il. 2854 IN A
> 132.68.239.58
>
> ;; AUTHORITY SECTION: il. 101370 IN NS
> nsa.ns.il. il. 101370 IN NS nsb.ns.il.
> il. 101370 IN NS nse.ns.il. il.
> 101370 IN NS ilns.ilan.net.il. il.
> 101370 IN NS lookup.iucc.ac.il. il.
> 101370 IN NS sns-pb.isc.org. il. 101370
> IN NS ns1.ns.il. il. 101370 IN NS
> ns2.ns.il. il. 101370 IN NS ns3.ns.il.
>
> ;; Query time: 1 msec ;; SERVER: 127.0.0.1#53(127.0.0.1) ;; WHEN: Wed
> Jan 10 08:51:05 2018 ;; MSG SIZE rcvd: 241
但问题没有解决。任何帮助将不胜感激。
答案1
是的，确实technion.ac.il存在，但至少根据公共 DNS，ilmn-qm.bi.technion.ac.il不存在。
$ dig +noauth ilmn-qm.bi.technion.ac.il ANY
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 61930
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
此外，该bi.technion.ac.il域还有一条 SPF 记录，表明只有 SPF 记录中列出的发件人spf.protection.outlook.com对该域有效。因此，即使您注册ilmn-qm.bi.technion.ac.il到公共 DNS，它也可能无法通过 SPF 检查。
$ dig +noauth bi.technion.ac.il ANY
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4367
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 13, ADDITIONAL: 15
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; ANSWER SECTION:
bi.technion.ac.il. 2468 IN TXT "EqkKAGrhnUwdxbT3qyzejnNnmW2bVdbFOhszJabIWkp/qtPbYYWRMF1M1WF2KoMBOn5y6bdiYpdrfDLKi7ZHDQ=="
bi.technion.ac.il. 2468 IN TXT "v=spf1 include:spf.protection.outlook.com -all"
bi.technion.ac.il. 2468 IN MX 0 bi-technion-ac-il.mail.protection.outlook.com.
bi.technion.ac.il. 2468 IN MX 20 mrelay.technion.ac.il.
bi.technion.ac.il. 2468 IN MX 10 nlbex.technion.ac.il.
编辑您的/etc/mail/domaintable内容无济于事：当您的系统与收件人的邮件服务器（根据公共 DNS MX 记录，为technion-ac-il.mail.protection.outlook.com）通信时，会发生错误，该服务器查询 DNS 并发现发件人地址在公共 DNS 中不存在。因此，它会假设您的服务器是充满恶意软件的主机或业余垃圾邮件发送者，因此它将拒绝该电子邮件。