В логах выдает вот такую ошибку
Jan 29 12:42:03 host=smtp.yandex.ru tls=on auth=on user=info@newpodshipnik.ru from=bitrix recipients=bitrix smtpstatus=501 smtpmsg='501 5.1.7 Bad address mailbox syntax. 1706521323-3gUe9aWo6uQ0-Z7lrvL9Y' errormsg='envelope from address bitrix not accepted by the server' exitcode=EX_DATAERR
В файле .msmtprc
# smtp account configuration for default
account default
logfile /home/bitrix/msmtp_default.log
host smtp.yandex.ru
port 587
from info@newpodshipnik.ru
aliases /etc/aliases
keepbcc on
auth on
user info@newpodshipnik.ru
password ********
tls on
tls_starttls on