I'm trying to get the message filtered by Sieve by the subject line:
Subject: =?utf-8?B?0K3Qu9C10LrRgtGA0L7QvdC90YvQuSDRh9C10Log0L/QviDQ?=
=?utf-8?B?t9Cw0LrQsNC30YMgMTY5MzQwMTktMDA4Ng==?=
This filter does get the message discarded:
if header :contains "Subject" "0"
{
discard;
}
but this one (or anything more complex) does not:
if header :contains "Subject" "L"
{
discard;
}
How come Sieve thinks the subject line contains 0
but not L
? Is there something fundamental I'm missing about Sieve and base64?