Hi,
Im having issues with qmail after every Plesk update. Everytime Plesk updates, SMTP login breaks.
From our mail log after Plesk micro-update #12 (on my mail account):
Aug 13 06:44:57 server cmd5checkpw: SMTP connect from xxx-xx-xx-xxx.perm.iinet.net.au [xxx.xx.xx.xxx]
Aug 13 06:44:57...