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  • The rogue EAI problem

    From John Levine@21:1/5 to All on Fri Jun 18 17:46:14 2021
    Here's what happens when I send the message locally with -v.


    $ sendmail -v -fuser1@xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s atest@xn--fct.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s
    Subject: another manual test

    hi there
    ^D
    atest@xn--fct.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s... Connecting to [127.0.0.1] via relay...
    220 xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s ESMTP Sendmail 8.17.0.2/8.16.1; Fri, 18 Jun 2021 16:56:38 GMT
    EHLO xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s 250-xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s Hello localhost [127.0.0.1], pleased to meet you
    250-ENHANCEDSTATUSCODES
    250-PIPELINING
    250-8BITMIME
    250-SIZE
    250-DSN
    250-SMTPUTF8
    250-ETRN
    250-STARTTLS
    250-DELIVERBY
    250 HELP
    STARTTLS
    220 2.0.0 Ready to start TLS
    EHLO xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s 250-xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s Hello localhost [127.0.0.1], pleased to meet you
    250-ENHANCEDSTATUSCODES
    250-PIPELINING
    250-8BITMIME
    250-SIZE
    250-DSN
    250-SMTPUTF8
    250-ETRN
    250-DELIVERBY
    250 HELP
    MAIL From:<user1@xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s> SIZE=39
    250 2.1.0 <user1@xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s>... Sender ok
    RCPT To:<atest@xn--fct.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s>
    DATA
    250 2.1.5 <atest@xn--fct.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s>... Recipient ok 354 Enter mail, end with "." on a line by itself
    .
    250 2.0.0 15IGucDw095566 Message accepted for delivery atest@xn--fct.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s... Sent (15IGucDw095566 Message accepted for delivery)
    Closing connection to [127.0.0.1]
    QUIT
    221 2.0.0 xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s closing connection

    and here's the Received lines when it arrives at my server. In that middle received line it
    looks like it turned into EAI:

    Received: from xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s ([IPV6:2606:4300:0:4::1003])
    by mail1.iecc.com ([IPV6:2001:470:1f07:1126:33:5370:616d:6d31])
    with UTF8SMTPS via TCP6 (port 42248/25) id 678221553
    tls TLS1_3_ECDHE_RSA_AES_256_GCM_AEAD; 18 Jun 2021 16:56:40 -0000
    Received: from xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s (localhost [127.0.0.1])
    by xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s (8.17.0.2/8.16.1) with UTF8SMTPS id 15IGucDw095566
    (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO)
    for <atest@xn--fct.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s>; Fri, 18 Jun 2021 16:56:39 GMT
    (envelope-from user1@xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s)
    Received: (from johnl@localhost)
    by xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s (8.17.0.2/8.16.1/Submit) id 15IGuQJX095564
    for atest@xn--fct.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s; Fri, 18 Jun 2021 16:56:26 GMT
    (envelope-from user1@xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s)
    --
    Regards,
    John Levine, johnl@taugh.com, Primary Perpetrator of "The Internet for Dummies",
    Please consider the environment before reading this e-mail. https://jl.ly

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Claus =?iso-8859-1?Q?A=DFmann?= @21:1/5 to John Levine on Fri Jun 18 18:50:56 2021
    John Levine wrote:
    Here's what happens when I send the message locally with -v.

    $ sendmail -v -fuser1@xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s atest@xn--fct.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s
    Subject: another manual test

    hi there

    Received: from xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s (localhost [127.0.0.1])
    by xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s (8.17.0.2/8.16.1)
    with UTF8SMTPS id 15IGucDw095566
    (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO)
    for <atest@xn--fct.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s>; Fri, 18 Jun 2021
    16:56:39 GMT
    (envelope-from user1@xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s)

    This doesn't happen on my test systems.

    Please start the sendmail daemon with -odq, run the test again,
    make a copy of the qf/df files for this test message, then run
    sendmail -Am -v -qRatest@xn--fct.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s 2>&1 |tee log.1
    and post log.1, the qf file, and the definition of the Received:
    header in your .cf file.

    --
    Note: please read the netiquette before posting. I will almost never
    reply to top-postings which include a full copy of the previous
    article(s) at the end because it's annoying, shows that the poster
    is too lazy to trim his article, and it's wasting the time of all readers.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From John Levine@21:1/5 to All on Sat Jun 19 00:16:47 2021
    According to Claus Aßmann <INVALID_NO_CC_REMOVE_IF_YOU_DO_NOT_POST_ml+sendmail(-no-copies-please)@esmtp.org>:
    Please start the sendmail daemon with -odq, run the test again,
    make a copy of the qf/df files for this test message, then run
    sendmail -Am -v -qRatest@xn--fct.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s 2>&1 |tee log.1
    and post log.1, the qf file, and the definition of the Received:
    header in your .cf file.

    Well, that's strange, this time there's no EAI, and I restarted things a few times, still no EAI.
    Will see if I can get it to do what it did before.

    I still think you should get rid of the -U flag and decide whether a mesasge needs EAI during the submission
    cleanup, like Postfix and Exim and Gmail do.

    R's,
    John


    $ cat log.1
    Running /var/spool/mqueue/15J067OQ096648 (sequence 1 of 1) <atest@xn--fct.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s>... Connecting to mail1.iecc.com. via esmtp...
    220 mail1.iecc.com mailfront ESMTP
    EHLO xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s 250-mail1.iecc.com
    250-SMTPUTF8
    250-AUTH LOGIN
    250-LIMITS RCPTMAX=20 MAILMAX=5
    250-SIZE 100000000
    250-8BITMIME
    250-ENHANCEDSTATUSCODES
    250-PIPELINING
    250-CHUNKING
    250 STARTTLS
    STARTTLS
    220 2.0.0 Ready to start TLS
    EHLO xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s 250-mail1.iecc.com
    250-SMTPUTF8
    250-AUTH LOGIN
    250-LIMITS RCPTMAX=20 MAILMAX=5
    250-SIZE 100000000
    250-8BITMIME
    250-ENHANCEDSTATUSCODES
    250-PIPELINING
    250-CHUNKING
    250 STARTTLS
    MAIL From:<user1@xn--5nq21jyu9d1ta.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s> SIZE=1146
    250 2.1.0 Sender accepted.
    RCPT To:<atest@xn--fct.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s>
    DATA
    250 2.1.5 Recipient accepted.
    354 End your message with a period on a line by itself.
    .
    250 2.6.0 Accepted message qp 11959 bytes 1798 <atest@xn--fct.xn--5nqx41au4nqohsp3axcg.xn--fiqs8s>... Sent (Accepted message qp 11959 bytes 1798)
    Closing connection to mail1.iecc.com.
    QUIT
    221 2.0.0 Good bye.
    --
    Regards,
    John Levine, johnl@taugh.com, Primary Perpetrator of "The Internet for Dummies",
    Please consider the environment before reading this e-mail. https://jl.ly

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)