Content-Type: text/plain Content-Disposition: inline Content-Transfer-Encoding: binary MIME-Version: 1.0 X-Mailer: MIME-tools 5.411 (Entity 5.404) RT-Send-CC: X-RT-Original-Encoding: iso-8859-1 Content-Length: 213 #1683 mitigates this problem somewhat, but we may want to implement in-library DNS caching anyway. SRV records won't be cached, and only working in terms of gethostbyname(), etc. prevents us from supporting IPv6.