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Postfix occasionally stops working until restart

The way you specified relayhost makes it to do a MX lookup on the specified name and use that name to look up the address of the server where to connect to 587. This is why it says "MX: Host not ...
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Postfix: change sender in queued messages

For sombody that can have this problem i solve like this thanks to you for ID in `mailq | awk '$1 !~/^$|[@\(^$-]/ { print $1 }' | tr -d \!`; do postsuper -h $ID; postcat -qbh $ID | sed 's/myadress@...
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