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  • Bug: UDP MX-Record Query

    From Digital Man to All on Thu May 13 15:10:27 2004
    Bug Report:

    I recently discovered a long standing bug in the sendmail portion of the Syncrhonet Mail Server. Retrieiving (DNS query) of MX-records for a particular domain name using UDP (instead of TCP) could fail to find the MX-records and return the domain portion of the destination e-mail address instead (which may or may not be the correct mail exchange for that domain). This problem applies to UDP-based MX-Record look-ups only and has been fixed for the next release (v3.11c).

    Work-around:

    Use TCP DNS queries instead of UDP, by checking the "TCP" checkbox in the mail server configuration dialog (in SBBSCTRL-Win32), or by adding USE_TCP_DNS to the Options value in the [Mail] key of your Synchronet initialization file (ctrl/sbbs.ini).

    digital man

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