split thread. hi, we 've got user exact same issue: "ce mot de passe été utilisé trop souvent dans le passé. choisissez une chaîne plus difficile à deviner. (which means: " we've seen password many times before. choose harder guess. ") errorcode: 120018 correlationid: 4ab3a486-a11a-4ead-983c-c1c391c3e7d5" it happens when tries update password "login.microsoftonline.com" portal. we tested more 5 different new passwords (passwords never seen before). office 365 synchronized ad; user's account not locked or whatsoever, account set able change password cannot reset it. thanks in advance. ***post moved moderator appropriate forum category.*** hi all, thanks replies. generally, password length greater 10 characters. understand users may want have longer passwords. please submit feedback improve our products , services. understandi
hi all, i posting question have faced issue last week, migration done exchange 2007 o365. there 1 distribution list in on prem & in o365 group (synced aadc). 1 migrated user send email dl before & after migration, strange thing that, before migration ok, after migration user got message as " delivery has failed these recipients or distribution lists: *** email address removed privacy *** this message has many recipients. microsoft exchange not try redeliver message you. please try resending fewer recipients, or provide following diagnostic text system administrator". *** email address removed privacy *** #550 5.5.3 resolver.adr.reciplimit; many recipients ## i have checked same message id in o365 message trace & found following... 8/16/2017 11:17:55 am receive message received by: db4pr05mb397 message received by: db4pr05mb397 8/16/2017 11:17:56 am expand dl the message sent distrib
split thread. hello bertel, kindly note that we have used hybrid configuration wizard (hcw) exchange 2013 office 365, , completed. this wizard created send/receive connectors, default didn't touch them , didn't edit configuration. the outbound send connector office 365 on premise server, forward emails our real ip. and on error mentioned ip: "reason: [{led=450 4.4.318 connection closed abruptly (suspiciousremoteservererror)};{msg=};{fqdn=our fqdn};{ip=our real ip};{lrt=7/11/2017 2:47:21 pm}]. outboundproxytargetip: 205.177.180.161. outboundproxytargethostname: our fqdn" i guess traffic forwarded office 365 our firewalls refused here on our enviroment. my question is: rules or policies should applied on firewall sides ? opened 25 traffic no luck. please advise, thanks in advance, hassan al kak hi hassan, office 365 ip lists may changed , please have check, make
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