De lista de discussão dovecot :
% bl0ck_qu0te%dovecot-2.2-pigeonhole$ git log --grep="^Released" --oneline
9d7b172 Released v0.4.11 for Dovecot v2.2.21.
439ad92 Released v0.4.11.rc1 for Dovecot v2.2.21.
fa008c0 Released v0.4.10 for Dovecot v2.2.21.
543848b Released v0.4.10.rc2 for Dovecot v2.2.20.
c3af27f Released v0.4.10.rc1 for Dovecot v2.2.20.rc1.
cef2176 Released v0.4.9 for Dovecot v2.2.19.
df7e58f Released v0.4.9.rc1 for Dovecot v2.2.19.rc1.
f95a87c Released v0.4.8 for Dovecot v2.2.18.
6f5be00 Released v0.4.8.rc3 for Dovecot v2.2.17.
42fe82a Released v0.4.8.rc2 for Dovecot v2.2.17.rc1.
c6c9320 Released v0.4.8.rc1 for Dovecot v2.2.17.rc1.
1052e9e Released v0.4.7 for Dovecot v2.2.16.
3103de6 Released v0.4.7.rc3 for Dovecot v2.2.16.
5acb35f Released v0.4.7.rc2 for Dovecot v2.2.16.
b63e87a Released v0.4.7.rc1 for Dovecot v2.2.16.rc1.
a06cc4b Released v0.4.6 for Dovecot v2.2.15.
890ae8e Released v0.4.5 for Dovecot v2.2.15.
cc57bb2 Released v0.4.4 for Dovecot v2.2.15.
84dde15 Released v0.4.3 for Dovecot v2.2.13.
1d85222 Released v0.3.6 for Dovecot v2.1.17.
a080843 Released v0.4.2 for Dovecot v2.2.6.
3ae0c2b Released v0.4.1 for Dovecot v2.2.4.
9791b4a Released v0.4.0 for Dovecot v2.2.1.
46755a8 Released v0.3.5 for Dovecot v2.1.16.
173e9dd Released v0.3.4 for Dovecot v2.1.16.
4ad40fc Released v0.3.3 for Dovecot v2.1.10.
0102b7f Released v0.3.2 for Dovecot v2.1.9.
28ac609 Released v0.3.1 for Dovecot v2.1.6.
eb0b1b2 Released v0.3.0 for Dovecot v2.1.0.
335451a Released v0.2.5 for Dovecot v2.0.16.
ba82a8f Released v0.2.4 for Dovecot v2.0.14.
1ef3f05 Released v0.2.3 for Dovecot v2.0.12.
c70867f Released v0.2.2 for Dovecot v2.0.8.
5d3a336 Released v0.2.1 for Dovecot v2.0.4.
7202ebb Released v0.2.0 for Dovecot v2.0.2.
798f218 Released v0.1.5 for Dovecot v1.2.rc3.
1dd42d5 Released v0.1.4 for Dovecot v1.2.beta3.
d6e7b70 Released v0.1.3 for Dovecot v1.2.beta1.
cf2ad5b Released v0.1.2 for Dovecot v1.2.alpha4.
bd9e1b2 Released v0.1.1 for Dovecot v1.2.alpha4.
f7270d1 Released v0.1.0 for Dovecot v1.2.alpha3.
Para referência, o código fonte do git é aqui .