Log Message:
postfix: update to 3.4.8

upstream changes:
-----------------
    Fix for an Exim interoperability problem when postscreen after-220 checks
    are enabled. Bug introduced in Postfix 3.4: the code that detected
    "PIPELINING after BDAT" looked at the wrong variable. The warning \ 
now says
    "BDAT without valid RCPT", and the error is no longer treated as a \ 
command
    PIPELINING error, thus allowing mail to be delivered. Meanwhile, Exim has
    been fixed to stop sending BDAT commands when postscreen rejects all RCPT
    commands.

    Usability bug, introduced in Postfix 3.4: the parser for key/certificate
    chain files rejected inputs that contain an EC PARAMETERS object. While
    this is technically correct (the documentation says what types are allowed)
    this is surprising behavior because the legacy cert/key parameters will
    accept such inputs. For now, the parser skips object types that it does not
    know about for usability, and logs a warning because ignoring inputs is not
    kosher.

    Bug introduced in Postfix 2.8: don't gratuitously enable all after-220
    tests when only one such test is enabled. This made selective tests
    impossible with 'good' clients. This will be fixed in older Postfix
    versions at some later time.