当通过我自己的SMTP服务器（mail.sarit.be）向[email protected]发送电子邮件时，接收邮件服务器回复：
451 #4.1.8 Domain of sender address <[email protected]> does not resolve 从我的后缀日志来看，所有接收MX服务器都无法parsingsarit.be或mail.sarit.be。
;; QUESTION SECTION: ;terremark.com. IN MX ;; ANSWER SECTION: terremark.com. 300 IN MX 15 fldsmtpe04.verizon.com. terremark.com. 300 IN MX 15 fldsmtpe01.verizon.com. terremark.com. 300 IN MX 15 fldsmtpe02.verizon.com. terremark.com. 300 IN MX 15 fldsmtpe03.verizon.com. Aug 6 08:47:42 charlie postfix/smtp[22257]: 2A45D2D56: to=<[email protected]>, relay=fldsmtpe01.verizon.com[140.108.26.140]:25, delay=418619, delays=418496/0.01/63/60, dsn=4.0.0, status=deferred (host fldsmtpe01.verizon.com[140.108.26.140] said: 451 #4.1.8 Domain of sender address <[email protected]> does not resolve (in reply to MAIL FROM command)) Aug 6 09:56:41 charlie postfix/smtp[22866]: 2A45D2D56: host fldsmtpe02.verizon.com[140.108.26.141] said: 451 #4.1.8 Domain of sender address <[email protected]> does not resolve (in reply to MAIL FROM command) Aug 6 09:57:44 charlie postfix/smtp[22866]: 2A45D2D56: to=<[email protected]>, relay=fldsmtpe03.verizon.com[140.108.26.142]:25, delay=422821, delays=422697/0.01/64/60, dsn=4.0.0, status=deferred (host fldsmtpe03.verizon.com[140.108.26.142] said: 451 #4.1.8 Domain of sender address <[email protected]> does not resolve (in reply to MAIL FROM command)) Aug 6 11:06:42 charlie postfix/smtp[23660]: 2A45D2D56: host fldsmtpe01.verizon.com[140.108.26.140] said: 451 #4.1.8 Domain of sender address <[email protected]> does not resolve (in reply to MAIL FROM command) Aug 6 11:07:44 charlie postfix/smtp[23660]: 2A45D2D56: to=<[email protected]>, relay=fldsmtpe03.verizon.com[140.108.26.142]:25, delay=427021, delays=426897/0.01/64/60, dsn=4.0.0, status=deferred (host fldsmtpe03.verizon.com[140.108.26.142] said: 451 #4.1.8 Domain of sender address <[email protected]> does not resolve (in reply to MAIL FROM command)) Aug 6 12:16:42 charlie postfix/smtp[24312]: 2A45D2D56: host fldsmtpe04.verizon.com[140.108.26.143] said: 451 #4.1.8 Domain of sender address <[email protected]> does not resolve (in reply to MAIL FROM command) Aug 6 12:17:43 charlie postfix/smtp[24312]: 2A45D2D56: to=<[email protected]>, relay=fldsmtpe02.verizon.com[140.108.26.141]:25, delay=431221, delays=431097/0.01/63/60, dsn=4.0.0, status=deferred (host fldsmtpe02.verizon.com[140.108.26.141] said: 451 #4.1.8 Domain of sender address <[email protected]> does not resolve (in reply to MAIL FROM command)) Aug 6 13:26:42 charlie postfix/smtp[24956]: 2A45D2D56: host fldsmtpe02.verizon.com[140.108.26.141] said: 451 #4.1.8 Domain of sender address <[email protected]> does not resolve (in reply to MAIL FROM command) Aug 6 13:27:43 charlie postfix/smtp[24956]: 2A45D2D56: to=<[email protected]>, relay=fldsmtpe04.verizon.com[140.108.26.143]:25, delay=435420, delays=435297/0.01/63/60, dsn=4.0.0, status=deferred (host fldsmtpe04.verizon.com[140.108.26.143] said: 451 #4.1.8 Domain of sender address <[email protected]> does not resolve (in reply to MAIL FROM command)) Aug 8 08:21:34 charlie postfix/smtp[15495]: 46D6E6353: host fldsmtpe03.verizon.com[140.108.26.142] said: 451 #4.1.8 Domain of sender address <[email protected]> does not resolve (in reply to MAIL FROM command)
我已经validation了我的MX服务器的反向DNS查找和sarit.be域的SPFlogging。
;; QUESTION SECTION: ;sarit.be. IN MX ;; ANSWER SECTION: sarit.be. 3600 IN MX 10 mail.sarit.be. ;; QUESTION SECTION: ;mail.sarit.be. IN A ;; ANSWER SECTION: mail.sarit.be. 2128 IN A 176.9.7.243 ;; QUESTION SECTION: ;243.7.9.176.in-addr.arpa. IN PTR ;; ANSWER SECTION: 243.7.9.176.in-addr.arpa. 43200 IN PTR mail.sarit.be. ;; QUESTION SECTION: ;sarit.be. IN SPF ;; ANSWER SECTION: sarit.be. 3600 IN SPF "v=spf1 +a +mx ~all"
最后，我在自己的邮件服务器和另一个MX服务器之间进行SMTP通信：
220 fldsmtpe01.verizon.com ESMTP EHLO mail.sarit.be 250-fldsmtpe01.verizon.com 250-8BITMIME 250-SIZE 20971520 250 STARTTLS MAIL FROM:<[email protected]> SIZE=537 451 #4.1.8 Domain of sender address <[email protected]> does not resolve RSET 250 reset QUIT 221 fldsmtpe01.verizon.com
我没有看到我的DNS的东西有什么问题。 发送电子邮件到其他域我没有问题。 很容易认为错误在接收邮件服务器上。 你怎么看？
PS：在这种情况下，反向DNS的东西似乎并不重要，因为当我将邮件从[email protected]发送到[email protected]时，即使这些MX服务器的正向/反向查找不匹配。
这看起来像接收方的临时DNS问题。 由于某些原因，他们的服务器无法parsing您的地址。 我认为没有什么可以解决你的问题。 也许你应该使用另一封邮件联系他们的代表，并要求他们解决这个问题。