I'm virus/spam filtering the mails already on the backup-servers (e.g.
10.0.0.2), so I have set a special tcp rule on my main mail server:
10.0.0.2:allow,RELAYCLIENT="",SPFBEHAVIOR="0"
This rule disables all kind of virus/spam and SPF chekcing whenever the mails
come from my backup-server. In case the backup mx does not filter, all filters
except SPF checks should of course be enabled.
Am 14.07.11 15:48, schrieb Eric Shubert:
You can "whitelist" a given sender for SPF by adding to the TXT (SPF) DNS
record for the domain. That would be your best/proper solution.
This way does not work, as you don't have influence to all sender's SPF records.
Johannes
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Johannes Weberhofer
Weberhofer GmbH, Austria, Vienna
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