Am 25.11.2014 um 23:06 schrieb Alexander Dalloz: >> MCI at 0x8055b34: >> flags=27c86c<CACHED,ESMTP,SIZE,8BITMIME,DSN,INMIME,AUTH,AUTHACT,ENHSTAT,PIPELINED,TLSACT>, >> >> errno=32, herrno=0, exitstat=75, state=8, pid=0, maxsize=20480000, >> phase=client >> DATA 354, mailer=esmtp, status=4.4.2, rstatus=(null), >> host=inet08.hamilton.harte-lyne.ca., lastuse=Mon Nov 24 10:56:35 >> 2014\n: 1 >> Time(s) >> MCI at 0x8053aa4: >> flags=27c86c<CACHED,ESMTP,SIZE,8BITMIME,DSN,INMIME,AUTH,AUTHACT,ENHSTAT,PIPELINED,TLSACT>, >> >> errno=32, herrno=0, exitstat=75, state=8, pid=0, maxsize=20480000, >> phase=client >> DATA 354, mailer=esmtp, status=4.4.2, rstatus=(null), >> host=inet08.hamilton.harte-lyne.ca., lastuse=Mon Nov 24 18:41:32 >> 2014\n: 1 >> Time(s) >> MCI at 0x8053aa4: >> flags=27c86c<CACHED,ESMTP,SIZE,8BITMIME,DSN,INMIME,AUTH,AUTHACT,ENHSTAT,PIPELINED,TLSACT>, >> >> errno=32, herrno=0, exitstat=75, state=8, pid=0, maxsize=20480000, >> phase=client >> DATA 354, mailer=esmtp, status=4.4.2, rstatus=(null), >> host=inet08.hamilton.harte-lyne.ca., lastuse=Tue Nov 25 07:41:32 >> 2014\n: 1 >> Time(s) > > From what kind of logfile are those lines? That's not Sendmail log style. I have to correct myself. This is MCI logging of Sendmail (Mail Connection Information (MCI) Caching Module). The log entries show dumping of MCI structure content. You seem to have communication issues between the systems involved. You better look into the /var/log/maillog directly to understand the whole information flow. Alexander Btw. CentOS 5.10 needs to be updated to 5.11 to be current with security and bug fixes.