On 6/1/20 10:29 AM, Jerry Geis wrote:
The problem is the client program trying to talk to the linux server
is base64 encoding the entire email address for the AUTH LOGIN,
not just the "username". so my user name needs to include the "@" symbol.
That's a common requirement for servers that implement multi-domain
hosting. In Courier MTA, you can host virtual users in a "userdb" file
or SQL DB (or LDAP):
https://www.courier-mta.org/FAQ.html#virtual
Postfix supports similar setup:
https://www.howtoforge.com/virtual-users-and-domains-with-postfix-courier-mysql-and-squirrelmail-debian-wheezy
Whether those are options may depend on how invested you are in
sendmail. If you're not a sendmail expert, you're probably better off
using a different mail server.
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