I've had 18 instances of this error the last 24 hours:
Sep 8 08:56:00 popimap1 dovecot:: lmtp(10529, first.last@example.om): mGdAOtdlaE4hKQAAg/aw4w: msgid=<B8FA3D5B230184409450D51D522678404E5052@ASP-EX02.ASP.lan>: save failed to INBOX: BUG: Unknown internal error17 on lmtp-server A, and one on lmtp-server B.
On server A it was a message with 55 recepients, where 17 failed initially -- and the was then successfully delivered.
lmtp pid 10529, 08:55:57-08:56:01 - 11 successfull deliveries, 17 BUGs
lmtp pid 10609, 08:56:00 - 1 successfull deliveries
lmtp pid 31291, 08:56:06 - 2 successfull deliveries
lmtp pid 10482, 08:56:04-06 - 3 successfull deliveries
lmtp pid 6738, 08:56:06 - 1 successfull deliveries
lmtp pid 24488, 08:56:06-07 - 5 successfull deliveries
lmtp pid 7101, 08:56:01-07 - 19 successfull deliveries
lmtp pid 21330, 08:56:08 - 1 successfull deliveries
lmtp pid 2177, 08:56:09 - 3 successfull deliveries
lmtp pid 7085, 08:56:10 - 3 successfull deliveries
lmtp pid 6633, 08:56:08-10 - 6 successfull deliveriesThe one on lmtp-server B was a different msgid from A, and also had several recepients (6). It was successfully delivered to the recepient that initially failed the same second.
Config here:
# 2.0.14: /etc/dovecot/dovecot.conf # OS: Linux 2.6.18-194.26.1.el5 x86_64 Red Hat Enterprise Linux Server release 5.5 (Tikanga) auth_verbose = yes auth_verbose_passwords = sha1 disable_plaintext_auth = no mail_gid = 3000 mail_location = maildir:~/:INDEX=/indexes/%1u/%1.1u/%u mail_plugins = quota mail_uid = 3000 mmap_disable = yes namespace { inbox = yes location = prefix = INBOX. type = private } passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } plugin { quota = maildir:User quota } service auth-worker { user = $default_internal_user } service auth { client_limit = 4396 } service imap-login { inet_listener imap { address = * port = 143 } } service imap { executable = /usr/local/sbin/imap-wrapper.sh process_limit = 2048 } service lmtp { client_limit = 1 inet_listener lmtp { address = * port = 24 } process_limit = 25 } service pop3-login { inet_listener pop3 { address = * port = 110 } } service pop3 { executable = /usr/local/sbin/pop-wrapper.sh process_limit = 2048 } ssl = no userdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } protocol lmtp { mail_plugins = quota } protocol imap { imap_client_workarounds = delay-newmail mail_plugins = quota imap_quota } protocol pop3 { mail_plugins = quota pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_uidl_format = UID%u-%v }
-jf