hostname is rather for the client

feeders/watcher/filters.py

@@ -107,7 +107,7 @@ class MemoryMixin:
 #
 # Postfix filters
 #
-POSTFIX_PREFIX = r"(?P<datetime>.*) (?P<hostname>.*) postfix/(smtps/)?smtpd\[(?P<pid>\d*)\]:"
+POSTFIX_PREFIX = r"(?P<datetime>.*) (?P<servername>.*) postfix/(smtps/)?smtpd\[(?P<pid>\d*)\]:"
 POSTFIX_REJECTED = POSTFIX_PREFIX + r" NOQUEUE: reject: RCPT from(.*)\[" + IPV4ORIPV6 + r"\]:"
 POSTFIX_DATE_FORMAT = r"%b %d %H:%M:%S"