So I currently have SES set up in the Frankfurt region, and Workmail set up in the Ireland region. I've been sending and receiving emails successfully through both for the last 6 months.
Yesterday I set up a rule in Workmail, that any incoming emails from a certain domain to admin@domain.ch trigger a lambda function. Upon doing this, however, any incoming emails to info@domain.ch now gives the sender the notification "This message could not be delivered due to a recipient error. Please try again later.". Now, after removing the rule, this issue persists and I can't get it to go away. I've tested sending from hotmail and gmail, both give the error. I have no incoming rules set up in SES either.
In case it helps, I logged the event in cloudwatch (anonymized here):
{
"accountId": "YYY",
"organizationId": "YYY",
"traceId": "YYY",
"eventTime": 1706304423353,
"event": {
"spamVerdict": "PASS",
"recipients": [
"info@domain.ch"
],
"subject": "Test",
"messageId": "YYY@mail.gmail.com",
"eventName": "ORGANIZATION_EMAIL_RECEIVED",
"from": "anonymized_incoming@gmail.com",
"dmarcVerdict": "PASS",
"spfVerdict": "PASS",
"messageTimestamp": 1706304422445,
"dkimVerdict": "PASS"
}
}
