I don't see the change 20200108 reflected in the transport(5) man page. While this isn't a problem per se, I have been using this form for internal routing:
exchange.charite.de exchange:s-mx14-ht01.charite.de,exchange:s-mx14-ht02.charite.de to get rid of the pesky internal MX record for exchange.charite.de. This worked until this morning 09:10:59 (I 've been using 20200112, I upgraded now, though): Jan 29 07:14:10 mail-cbf-int postfix/master[3584]: reload -- version 3.5-20200112, configuration /etc/postfix Jan 29 09:10:59 mail-cbf-int postfix/smtp[32685]: fatal: unknown service: s-mx14-ht02.charite.de/tcp Jan 29 09:10:59 mail-cbf-int postfix/smtp[32885]: fatal: unknown service: s-mx14-ht02.charite.de/tcp Jan 29 09:10:59 mail-cbf-int postfix/smtp[32884]: fatal: unknown service: s-mx14-ht02.charite.de/tcp Jan 29 09:10:59 mail-cbf-int postfix/smtp[32943]: fatal: unknown service: s-mx14-ht02.charite.de/tcp Jan 29 09:10:59 mail-cbf-int postfix/smtp[33545]: fatal: unknown service: s-mx14-ht02.charite.de/tcp Jan 29 09:10:59 mail-cbf-int postfix/smtp[33707]: fatal: unknown service: s-mx14-ht02.charite.de/tcp Jan 29 09:12:00 mail-cbf-int postfix/smtp[34103]: fatal: unknown service: s-mx14-ht02.charite.de/tcp Jan 29 09:12:48 mail-cbf-int postfix/master[3584]: reload -- version 3.5-20200112, configuration /etc/postfix Interesting logs: Jan 29 09:10:59 mail-cbf-int postfix/tlsproxy[33285]: DISCONNECT [10.32.37.105]:25 Jan 29 09:10:59 mail-cbf-int postfix/smtp[32685]: 486x4x5kyfz20krL: lost connection with s-mx14-ht01.charite.de[10.32.37.105] while sending end of data -- message may be sent more than once Jan 29 09:10:59 mail-cbf-int postfix/smtp[32685]: fatal: unknown service: s-mx14-ht02.charite.de/tcp Jan 29 09:10:59 mail-cbf-int postfix/smtp[32885]: 486x4x5tWJz20kyZ: lost connection with s-mx14-ht01.charite.de[10.32.37.105] while sending end of data -- message may be sent more than once Jan 29 09:10:59 mail-cbf-int postfix/tlsproxy[33285]: DISCONNECT [10.32.37.105]:25 Jan 29 09:10:59 mail-cbf-int postfix/smtp[32885]: fatal: unknown service: s-mx14-ht02.charite.de/tcp Jan 29 09:10:59 mail-cbf-int postfix/tlsproxy[33285]: DISCONNECT [10.32.37.105]:25 Jan 29 09:10:59 mail-cbf-int postfix/smtp[32884]: 486x4y0nSFz20l2f: lost connection with s-mx14-ht01.charite.de[10.32.37.105] while sending end of data -- message may be sent more than once Jan 29 09:10:59 mail-cbf-int postfix/smtp[32884]: fatal: unknown service: s-mx14-ht02.charite.de/tcp and later: Jan 29 09:11:00 mail-cbf-int postfix/qmgr[2174]: warning: transport exchange failure -- see a previous warning/fatal/panic logfile record for the problem description Jan 29 09:11:00 mail-cbf-int postfix/qmgr[2174]: warning: transport exchange failure -- see a previous warning/fatal/panic logfile record for the problem description Jan 29 09:11:00 mail-cbf-int postfix/qmgr[2174]: warning: transport exchange failure -- see a previous warning/fatal/panic logfile record for the problem description Jan 29 09:11:00 mail-cbf-int postfix/qmgr[2174]: warning: transport exchange failure -- see a previous warning/fatal/panic logfile record for the problem description I checked that transport_maps has not been changed prior to the failure: Jan 29 09:26:31 mail-cbf-int postfix/trivial-rewrite[46120]: table cdb:/etc/postfix/transport(0,lock|no_regsub|fold_fix|utf8_request) has changed -- restarting Jan 29 09:27:11 mail-cbf-int postfix/trivial-rewrite[46273]: table cdb:/etc/postfix/transport(0,lock|no_regsub|fold_fix|utf8_request) has changed -- restarting Jan 29 09:27:12 mail-cbf-int postfix/trivial-rewrite[46290]: table cdb:/etc/postfix/transport(0,lock|no_regsub|fold_fix|utf8_request) has changed -- restarting Jan 29 09:28:12 mail-cbf-int postfix/trivial-rewrite[46471]: table cdb:/etc/postfix/transport(0,lock|no_regsub|fold_fix|utf8_request) has changed -- restarting Jan 29 09:28:20 mail-cbf-int postfix/trivial-rewrite[46558]: table cdb:/etc/postfix/transport(0,lock|no_regsub|fold_fix|utf8_request) has changed -- restarting Jan 29 09:36:58 mail-cbf-int postfix/trivial-rewrite[49739]: table cdb:/etc/postfix/transport(0,lock|no_regsub|fold_fix|utf8_request) has changed -- restarting Jan 29 09:37:00 mail-cbf-int postfix/trivial-rewrite[46807]: table cdb:/etc/postfix/transport(0,lock|no_regsub|fold_fix|utf8_request) has changed -- restarting Jan 29 09:37:04 mail-cbf-int postfix/trivial-rewrite[47049]: table cdb:/etc/postfix/transport(0,lock|no_regsub|fold_fix|utf8_request) has changed -- restarting Jan 29 09:40:06 mail-cbf-int postfix/trivial-rewrite[51439]: table cdb:/etc/postfix/transport(0,lock|no_regsub|fold_fix|utf8_request) has changed -- restarting -- [*] sys4 AG https://sys4.de, +49 (89) 30 90 46 64 Schleißheimer Straße 26/MG, 80333 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Marc Schiffbauer Aufsichtsratsvorsitzender: Florian Kirstein
