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Resolved Deferred emails after recofingurator ip change

pegasx

Basic Pleskian
Server operating system version
Centos 6
Plesk version and microupdate number
Plesk Obsidian Web Admin Edition Version 18.0.31
Hello,

After changing all ip adresses on server, all emails are deferred. Server can recieve emails on email boxes but could not send. What can be the problem?

Thanks.
 
Postfix trying to connect old ip addresses.

Apr 26 11:43:02 mail postfix/qmgr[1438]: warning: connect to transport private/plesk-xxxxxxx.com-xxx.xxx.xxx.xxx-: Connection refused
 
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