Re: [exim/exim] [RFE] Change default encoding from us-ascii to utf-8 (Issue #3198)

This feels like it should have a new main-section config option to control it; presumably a single boolean enabling charset=UTF-8 for the (?) 3 places in *deliver.c*. Or perhaps a string, with only us-ascii or UTF-8 values accepted.

Need to check the precise spelling permitted by standards.

We already have various options named bounce_* so bounce_charset if it's the string variant.

Formally, UTF-8 is a strict superset of ASCII so there is no interop problem there - however, it's not at all unlikely that some software out there will be unable to handle charset=UTF-8 so controllability of its use is a requirement. Therefore, the option needs to be expanded and the implementation must ensure that information relevant to decisions on its use for individual message is available for the time of expansion. At minimum this should include the destination host for the message being generated.

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View it on Exim Forgejo ( https://code.exim.org/exim/exim/issues/3198#issuecomment-238965 ) or reply to this email directly.