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  • DAEMON_OPTIONS with Modifiers=A but still authentication attempts on po

    From Jobst Schmalenbach@21:1/5 to All on Thu Jan 9 16:06:31 2025
    Hi

    I didn't know "Modifiers=A" existed until I came across this

    https://www.hydrus.org.uk/journal/sendmail-noauth.html

    referencing a thread in

    https://groups.google.com/g/comp.mail.sendmail/c/c8x-bA07_d0

    Since the discovery of "Modifiers=A" I have tried, yet the attempts are
    still coming in (duplicates deleted):

    Jan 9 12:28:13 mail saslauthd[1930]: : auth failure: [user=trangtry] [service=smtp] [realm=barrett.com.au] [mech=pam] [reason=PAM auth error]
    Jan 9 12:55:45 mail saslauthd[1933]: : auth failure: [user=business] [service=smtp] [realm=barrett.com.au] [mech=pam] [reason=PAM auth error]
    Jan 9 13:00:16 mail saslauthd[1929]: : auth failure:
    [user=barrykennedy] [service=smtp] [realm=barrett.com.au] [mech=pam] [reason=PAM auth error]
    Jan 9 13:27:53 mail saslauthd[1930]: : auth failure: [user=psf] [service=smtp] [realm=barrett.com.au] [mech=pam] [reason=PAM auth error]
    Jan 9 13:36:06 mail saslauthd[1933]: : auth failure: [user=scr] [service=smtp] [realm=barrett.com.au] [mech=pam] [reason=PAM auth error]


    The important bits in the sendmail.mc file:

    define(`confAUTH_OPTIONS', `p')
    TRUST_AUTH_MECH(`EXTERNAL DIGEST-MD5 CRAM-MD5 PLAIN')
    define(`confAUTH_MECHANISMS', `EXTERNAL DIGEST-MD5 CRAM-MD5 PLAIN')
    DAEMON_OPTIONS(`Family=inet, Addr=101.0.102.2, Port=smtp, Name=MTA-barrett.com.au, Modifiers=A')
    DAEMON_OPTIONS(`Family=inet, Addr=127.0.0.1, Port=smtp, Name=MTA-localhost, Modifiers=A')
    DAEMON_OPTIONS(`Family=inet, Addr=101.0.102.2, Port=smtps, Name=MTA-SSL-barrett.com.au, Modifiers=s')

    versions:
    cyrus-sasl.x86_64 2.1.27-6.el8_5
    sendmail.x86_64 8.15.2-34.el8

    --- SoupGate-Win32 v1.05
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  • From Claus =?iso-8859-1?Q?A=DFmann?= @21:1/5 to Jobst Schmalenbach on Thu Jan 9 01:55:15 2025
    Jobst Schmalenbach wrote:

    Since the discovery of "Modifiers=A" I have tried, yet the attempts are

    DAEMON_OPTIONS(`Family=inet, Addr=101.0.102.2, Port=smtp, Name=MTA-barrett.com.au, Modifiers=A')

    You can easily check it yourself:

    telnet 101.0.102.2 25
    wait for greeting
    EHLO your.host


    $ telnet 101.0.102.2 25
    220 mail.barrett.com.au ESMTP SMTP
    ehlo my.host
    250-barrett.com.au Hello ....
    250-ENHANCEDSTATUSCODES
    250-PIPELINING
    250-8BITMIME
    250-SIZE 360000000
    250-DSN
    250-ETRN
    250-STARTTLS
    250-DELIVERBY
    250 HELP
    AUTH Login asb
    503 5.3.3 AUTH not available

    Seems to work as expected.

    Hence the AUTH attempts are on a different port or from something else.

    sendmail.x86_64 8.15.2-34.el8

    Pretty old?

    --
    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
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  • From Marco Moock@21:1/5 to All on Thu Jan 9 17:36:17 2025
    On 09.01.2025 01:55 Uhr Claus Aßmann wrote:

    sendmail.x86_64 8.15.2-34.el8

    Pretty old?

    The version that is being shipped with RHEL8.
    el8 indicates that.

    RHEL users want old versions. :-)

    --
    kind regards
    Marco

    Send spam to 1736384115muell@stinkedores.dorfdsl.de

    --- SoupGate-Win32 v1.05
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  • From Jobst Schmalenbach@21:1/5 to Marco Moock on Mon Jan 13 10:19:56 2025
    On 10/01/2025 3:36, Marco Moock wrote:
    On 09.01.2025 01:55 Uhr Claus Aßmann wrote:

    sendmail.x86_64 8.15.2-34.el8

    RHEL users want old versions. :-)

    Not really ;-)

    --- SoupGate-Win32 v1.05
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