Bug#296492: exim4: remote_smtp transport should fallback to ipv4 with fallback_hosts too

[Laurent Fousse]

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Package: exim4
Version: 4.44-2
Severity: normal

Hi,

When sending to a remote host that has both an ipv6 and ipv4 RR, exim
falls back immediately to ipv4 when ipv6 connectivity is not present.
I noticed however that exim is stuck to ipv6 when it's trying to send
to a "fallback_host".

-- Package-specific info:
Exim version 4.44 #1 built 27-Jan-2005 14:41:43
Copyright (c) University of Cambridge 2004
Berkeley DB: Sleepycat Software: Berkeley DB 4.2.52: (December  3, 2003)
Support for: iconv() IPv6 GnuTLS
Lookups: lsearch wildlsearch nwildlsearch iplsearch cdb dbm dbmnz dsearch nis nis0 passwd
Authenticators: cram_md5 plaintext
Routers: accept dnslookup ipliteral manualroute queryprogram redirect
Transports: appendfile/maildir/mailstore autoreply lmtp pipe smtp
Fixed never_users: 0
Configuration file is /var/lib/exim4/config.autogenerated

-- System Information:
Debian Release: 3.1
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: powerpc (ppc)
Kernel: Linux 2.6.10-ac11-jalta
Locale: LANG=C, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)

Versions of packages exim4 depends on:
ii  exim4-base                    4.44-2     support files for all exim MTA (v4
ii  exim4-daemon-light            4.44-2     lightweight exim MTA (v4) daemon

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