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Sendmail on AIX,tls problem

  • 1.  Sendmail on AIX,tls problem

    Posted Thu January 21, 2016 03:51 PM

    Originally posted by: aixunix33


    Latest aix 7.1 sendmail

    configure tls as this

     

    nclude(`/usr/samples/tcpip/sendmail/m4/cf.m4')
    divert(0)dnl
    VERSIONID(`Mustafar')
    OSTYPE(aixsample)dnl
    DOMAIN(`generic')dnl
    define(`_X400_UUCP_')dnl
    define(`_MASQUERADE_ENVELOPE_')dnl
    define(`MASQUERADE_NAME')dnl
    define(`confTRY_NULL_MX_LIST',`T')dnl
    define(`LUSER_RELAY',`name_of_luser_relay')dnl
    define(`DATABASE_MAP_TYPE',`dbm')dnl
    define(`_CLASS_U_')dnl
    define(`LOCAL_RELAY')dnl
    define(`MAIL_HUB')dnl
    define(`confRUN_AS_USER', `mailnull:mail')
    TRUST_AUTH_MECH(`GSSAPI DIGEST-MD5')dnl
    FEATURE(always_add_domain)dnl
    FEATURE(access_db)dnl
    MAILER(local)dnl
    MAILER(smtp)dnl
    MAILER(uucp)dnl
    define(`confCACERT_PATH', `/opt/freeware/etc/pki//certs')dnl
    define(`confCACERT', `/opt/freeware/etc/pki//certs/blu.privata.crt')dnl
    define(`confSERVER_CERT', `/opt/freeware/etc/pki//certs/ibmaix.blu.privata.crt')dnl
    define(`confSERVER_KEY', `/opt/freeware/etc/pki//private/ibmaix.blu.privata.key')dnl
    define(`confCLIENT_CERT', `/opt/freeware/etc/pki//certs/ibmaix.blu.privata.crt')dnl
    define(`confCLIENT_KEY', `/opt/freeware/etc/pki//private/ibmaix.blu.privata.key')dnl
    define(`confRAND_FILE',`egd:/dev/urandom')dnl
    D{tls_version}TLSv1
    O DHParameters=/opt/freeware/etc/pki/private/dhparams.pem
    O PrivacyOptions=goaway
    dnl# hide stmp version
    define(`confSMTP_LOGIN_MSG',`Sendomail $w MTA pronto per servirvi ; $b')
    LOCAL_CONFIG
    dnl# Do not allow the weak SSLv2:
    O CipherList=HIGH:!ADH-DES-CBC3-SHA:!ADH-AES128-SHA:!ADH-AES256-SHA:!ADH-CAMELLIA128-SHA:!ADH-CAMELLIA256-SHA:!DH-AES128-SHA256:!DH-AES256-SHA256:!aNULL:!DES:!3DES:!MD5:!DES+MD5:!RC4
    O ServerSSLOptions=+SSL_OP_NO_SSLv2 +SSL_OP_NO_SSLv3 +SSL_OP_CIPHER_SERVER_PREFERENCE
    O ClientSSLOptions=+SSL_OP_NO_SSLv2 +SSL_OP_NO_SSLv3
    O PidFile=/var/run/sendmail.pid
    
    
    On Linux i have the same configuration,but with
    

    new sendmail version.

    When i send a letter to aix workstation on linux i see those

    messages

     

     

    Jan 21 21:25:37 slack64 sendmail[7482]: u0LKPZ4W007482: to=root@ibmaix, ctladdr=giuseppe (10083/100), delay=00:00:02, xdelay=00:00:01, mailer=relay, pri=30194, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (u0LKPaYA007483 Message accepted for delivery)
    Jan 21 21:26:37 slack64 sendmail[7511]: u0LKQahO007511: from=giuseppe, size=194, class=0, nrcpts=1, msgid=<201601212026.u0LKQahO007511@slack64.blu.privata>, relay=giuseppe@localhost
    Jan 21 21:26:37 slack64 sm-mta[7512]: STARTTLS=server, relay=localhost [127.0.0.1], version=TLSv1/SSLv3, verify=NO, cipher=DHE-RSA-AES256-GCM-SHA384, bits=256/256
    Jan 21 21:26:37 slack64 sendmail[7511]: STARTTLS=client, relay=[127.0.0.1], version=TLSv1/SSLv3, verify=FAIL, cipher=DHE-RSA-AES256-GCM-SHA384, bits=256/256
    

    And the mail return to me.

    what's the problem?

    Self signed certs or other?

    On other servers i can send email with tls



  • 2.  Re: Sendmail on AIX,tls problem

    Posted Mon January 25, 2016 11:12 AM

    Originally posted by: gsrini


    Hi,

     

    Have you linked "/usr/lib/sendmail" with "/usr/sbin/sendmail_ssl" on the AIX sendmail server? Also please check if you have installed the latest openssl version.

     

    Regards,

    Srinivas.



  • 3.  Re: Sendmail on AIX,tls problem

    Posted Wed January 27, 2016 07:15 PM

    Originally posted by: aixunix33


    Yes of course is linked



  • 4.  Re: Sendmail on AIX,tls problem

    Posted Mon January 25, 2016 11:15 AM

    Originally posted by: gsrini


    You can also run "openssl s_client -starttls smtp -connect localhost:25" on the AIX server to check if sendmail with TLS is configured properly.



  • 5.  Re: Sendmail on AIX,tls problem

    Posted Wed January 27, 2016 07:16 PM

    Originally posted by: aixunix33


    This command runs fine

     

    openssl s_client -connect ibmaix:25 -starttls smtp -tls1