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Mailer Error - Authentication Failture code 220, response; begin TTL Negotitaion
I'm having an issue with my osTicket emailing alerts out. See this screenshot
for reference. We are running osTicket v1.7.0.
We have osTicket send alerts to a Windows Server that is running mDeamon. That relay then emails out to our Exchange 2010 server or out to our customers. The log in the screenshot that I linked is absolutely flooded with the following errors:
Mail Fetcher - Type = Warning: Excessive errors processing emails for email@example.com. Please manually check the inbox.
Log Date: Aug, Wed 5 2015 10:26am EDT IP Address: xxx.xxx.xxx.xxx
Mailer Error - Type = Error: Unable to email via SMTP:m.domain.com:587 [firstname.lastname@example.org]
authentication failure [SMTP: STARTTLS failed (code: 220, response: Begin TLS negotiation)]
Log Date: Aug, Wed 5 2015 10:25am EDT IP Address: xxx.xxx.xxx.xxx
I'm hopeful that someone in the community here will have some insight.
Thanks for reading.