# emerge -pv dovecot These are the packages that would be merged, in order: Calculating dependencies... done! [ebuild R ] net-mail/dovecot-2.2.16-r1 USE="bzip2 ipv6 maildir pam ssl tcpd zlib -caps -cydir -doc -imapc -kerberos -ldap -lucene -lz4 -lzma -managesieve -mbox -mdbox -mysql -pop3c -postgres -sdbox (-selinux) -sieve -solr -sqlite -static-libs -suid -vpopmail" 0 kB # Hmm, but dovecot seems to listen on port 110 with the above USE flags. It is unencrypted, true. # netstat -l | grep pop3 tcp 0 0 *:pop3 *:* LISTEN tcp 0 0 *:pop3s *:* LISTEN tcp6 0 0 [::]:pop3 [::]:* LISTEN tcp6 0 0 [::]:pop3s [::]:* LISTEN unix 2 [ ACC ] STREAM LISTENING 2037596 /var/run/dovecot/login/pop3 # So what is USE=pop3c? I don't see anything like that here: # grep pop3 /etc/services pop3 110/tcp pop-3 # Post Office Protocol - Version 3 pop3 110/udp pop-3 pop3s 995/tcp # pop3 protocol over TLS/SSL pop3s 995/udp # # euse --info pop3c global use flags (searching: pop3c) ************************************************************ no matching entries found local use flags (searching: pop3c) ************************************************************ [- ] pop3c net-mail/dovecot: Add pop3 client storage support [- ] 2.2.9 [gentoo] [- ] 2.2.16-r1 [gentoo] [- ] 2.2.18 [gentoo] # euse --info pop3 global use flags (searching: pop3) ************************************************************ no matching entries found local use flags (searching: pop3) ************************************************************ no matching entries found # Please document what is the USE flag doing. Initially I thought I do not have enabled ports 110 or 995 but that is fortunately not the case?
local use flags (searching: pop3c) ************************************************************ [- ] pop3c net-mail/dovecot: Add pop3 client storage support [- ] 2.2.9 [gentoo] [- ] 2.2.16-r1 [gentoo] [- ] 2.2.18 [gentoo]
I have USE=-pop3c but am happily using dovecot as a POP3 server for my external client. If the USE flag to enable some builtin POP3 client (no idea what it would be useful for), then I would not mind. However, the portname/portnumber would better respect namings from /etc/services. Or just provide better description served by 'euse --info pop3c', especially as it is the only package providing this USE flag. My naive expectation is/was that USE=-pop3 would disable the service on port 110, maybe even 109 which I think the pop1 protocol in the past. Then I would understand that USE=pop3s is for enabling/disabling the port 995 servicing. However, I am talking about server-side options, IMHO. I don';t get what the "client" means here.
pop3c determines whether we build a pop3 client. Pop3 server is a different thing altogether and is configured via teh configuration files. Here is one use case for pop3c: http://wiki2.dovecot.org/Migration/Dsync
