======== Required information ====
- iRedMail version: 0.8.5
- iRedAdmin-Pro-LDAP version: 1.9.0
- iRedAPD version: 1.4.1
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): LDAP
- Linux/BSD distribution name and version: Ubuntu 12.04.3 LTS
- Related log if you're reporting an issue: /var/log/syslog
====
Our incoming mail is delivered first to a anti-spam relay (Bytemark) before being passed onto our iredmail server (a VPS hosted by Bytemark). From time to time I am seeing the following entries appearing in our logs and wondered what they mean and whether they indicate a problem:
postfix/smtpd[2913]: improper command pipelining after DATA from nospam1.sh.bytemark.co.uk[89.16.184.148]
I have logged a call with Bytemark on this issue and they are looking into it, but I believe at the moment it is as much a mystery to them. They cannot see corresponding errors in their mail logs.
Any advice gratefully received.