Cannot send or receive mail on Ubuntu 18.04

[Munson, Eric]

Hi,

Something changed with the Ubuntu kolab repos in the last few days that had broken my mail server.  Now all mail gets the following logs:

May 18 14:16:31 post postfix/smtpd[2641]: connect from
smtp-fw-9101.amazon.com[207.171.184.25]
May 18 14:16:33 post postfix/smtpd[2641]: AE4C25C0C42:
client= smtp-fw-9101.amazon.com[207.171.184.25]
May 18 14:16:33 post postfix/smtpd[2641]: AE4C25C0C42: reject: DATA from
smtp-fw-9101.amazon.com[207.171.184.25]: 554 5.7.1 <DATA>: Data command
rejected: Recipient access denied;
from=<prvs=034f11357=*****@ amazon.com> to=<*****@ domain.net>
proto=ESMTP helo=< smtp-fw-9101.amazon.com>
May 18 14:16:39 post postfix/smtpd[2641]: disconnect from
smtp-fw-9101.amazon.com[207.171.184.25] ehlo=2 starttls=1 mail=1 rcpt=1
data=0/1 quit=1 commands=6/7
May 18 14:18:03 post postfix/submission/smtpd[2657]: connect from
localhost[127.0.0.1]
May 18 14:18:04 post postfix/submission/smtpd[2657]: 517CB5C0C42:
client=localhost[127.0.0.1], sasl_method=LOGIN,
sasl_username=*****@ domain.net
May 18 14:18:04 post postfix/submission/smtpd[2657]: 517CB5C0C42:
reject: DATA from localhost[127.0.0.1]: 554 5.7.1 <DATA>: Data command
rejected: Sender access denied; from=<*****@ domain.net> proto=ESMTP
helo=< post.domain.org>
May 18 14:18:04 post postfix/submission/smtpd[2657]: disconnect from
localhost[127.0.0.1] ehlo=2 starttls=1 auth=1 mail=1 rcpt=2 data=0/1
rset=1 quit=1 commands=9/10

How can I fix this?

Thanks,
Eric

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