[CentOS] cyrus: socket options

Fri Mar 16 12:07:25 UTC 2018
hw <hw at gc-24.de>

Hi,

what are the following messages supposed to tell me and does this 
indicate a problem?


# systemctl status cyrus-imapd
[...]
master[3766]: unable to setsocketopt(IP_TOS): Operation not supported
master[3766]: unable to setsocketopt(IP_TOS): Operation not supported
[...]


Exim says it can not connect to the lmtp socket even when selinux 
doesn´t get in the way.  The configuration looks like this:


cyrus.conf (none of the two options work):

[...]
   # lmtp                cmd="lmtpd -a" listen="lmtp:127.0.0.1" prefork=4
   lmtpunix      cmd="lmtpd -a" listen="/var/lib/imap/socket/lmtp" prefork=4
[...]


exim.conf:

[...]
begin transports
 
 

# cyrus_ltcp:
#   driver = smtp
#   protocol = lmtp
#   delivery_date_add
#   envelope_to_add
#   return_path_add
#   hosts = localhost
#   allow_localhost

lmtp_socket:
   driver = lmtp
   socket = /var/lib/imap/socket/lmtp
   delivery_date_add
   envelope_to_add
   return_path_add


# ls -la /var/lib/imap/socket/lmtp
srwxrwxrwx. 1 root root 0 Mar 16 12:58 /var/lib/imap/socket/lmtp


I have this working on the old server (which doesn´t run Centos) and am 
trying to migrate it to the new one (which runs Centos 7.4).  The 
version of cyrus and sasl are the same on both machines.

What´s the problem with Centos that these things don´t just work as they 
usually do?