With current Tumbleweed git send-email fails to authenticate with the SMTP
server. This used to work. since I rarly use git send-email I cant say when it
started. The username/password combination works with mutt.

Send this email? ([y]es|[n]o|[q]uit|[a]ll): y
Net::SMTP>>> Net::SMTP(3.10)
Net::SMTP>>>   Net::Cmd(3.10)
Net::SMTP>>>     Exporter(5.72)
Net::SMTP>>>   IO::Socket::IP(0.38)
Net::SMTP>>>     IO::Socket(1.38)
Net::SMTP>>>       IO::Handle(1.36)
Net::SMTP=GLOB(0x55b5df986d00)<<< 220 smtp.strato.de ESMTP RZmta (P7 -)
Net::SMTP=GLOB(0x55b5df986d00)>>> EHLO sender
Net::SMTP=GLOB(0x55b5df986d00)<<< 250-smtp.strato.de greets
2001:a62:816:91ff:a572:884d:f51d:1a86
Net::SMTP=GLOB(0x55b5df986d00)<<< 250-ENHANCEDSTATUSCODES
Net::SMTP=GLOB(0x55b5df986d00)<<< 250-PIPELINING
Net::SMTP=GLOB(0x55b5df986d00)<<< 250-8BITMIME
Net::SMTP=GLOB(0x55b5df986d00)<<< 250-DELIVERBY
Net::SMTP=GLOB(0x55b5df986d00)<<< 250-SIZE 104857600
Net::SMTP=GLOB(0x55b5df986d00)<<< 250-AUTH DIGEST-MD5 CRAM-MD5 LOGIN PLAIN
Net::SMTP=GLOB(0x55b5df986d00)<<< 250-STARTTLS
Net::SMTP=GLOB(0x55b5df986d00)<<< 250-BURL imap
Net::SMTP=GLOB(0x55b5df986d00)<<< 250-CHUNKING
Net::SMTP=GLOB(0x55b5df986d00)<<< 250 HELP
Net::SMTP=GLOB(0x55b5df986d00)>>> STARTTLS
Net::SMTP=GLOB(0x55b5df986d00)<<< 220 Ready to start TLS
Net::SMTP::_SSL=GLOB(0x55b5df986d00)>>> EHLO sender
Net::SMTP::_SSL=GLOB(0x55b5df986d00)<<< 250-smtp.strato.de greets
2001:a62:816:91ff:a572:884d:f51d:1a86
Net::SMTP::_SSL=GLOB(0x55b5df986d00)<<< 250-ENHANCEDSTATUSCODES
Net::SMTP::_SSL=GLOB(0x55b5df986d00)<<< 250-PIPELINING
Net::SMTP::_SSL=GLOB(0x55b5df986d00)<<< 250-8BITMIME
Net::SMTP::_SSL=GLOB(0x55b5df986d00)<<< 250-DELIVERBY
Net::SMTP::_SSL=GLOB(0x55b5df986d00)<<< 250-SIZE 104857600
Net::SMTP::_SSL=GLOB(0x55b5df986d00)<<< 250-AUTH DIGEST-MD5 CRAM-MD5 LOGIN
PLAIN
Net::SMTP::_SSL=GLOB(0x55b5df986d00)<<< 250-BURL imap
Net::SMTP::_SSL=GLOB(0x55b5df986d00)<<< 250-CHUNKING
Net::SMTP::_SSL=GLOB(0x55b5df986d00)<<< 250 HELP
Net::SMTP::_SSL=GLOB(0x55b5df986d00)>>> EHLO sender
Net::SMTP::_SSL=GLOB(0x55b5df986d00)<<< 250-smtp.strato.de greets
2001:a62:816:91ff:a572:884d:f51d:1a86
Net::SMTP::_SSL=GLOB(0x55b5df986d00)<<< 250-ENHANCEDSTATUSCODES
Net::SMTP::_SSL=GLOB(0x55b5df986d00)<<< 250-PIPELINING
Net::SMTP::_SSL=GLOB(0x55b5df986d00)<<< 250-8BITMIME
Net::SMTP::_SSL=GLOB(0x55b5df986d00)<<< 250-DELIVERBY
Net::SMTP::_SSL=GLOB(0x55b5df986d00)<<< 250-SIZE 104857600
Net::SMTP::_SSL=GLOB(0x55b5df986d00)<<< 250-AUTH DIGEST-MD5 CRAM-MD5 LOGIN
PLAIN
Net::SMTP::_SSL=GLOB(0x55b5df986d00)<<< 250-BURL imap
Net::SMTP::_SSL=GLOB(0x55b5df986d00)<<< 250-CHUNKING
Net::SMTP::_SSL=GLOB(0x55b5df986d00)<<< 250 HELP
Net::SMTP::_SSL=GLOB(0x55b5df986d00)>>> AUTH DIGEST-MD5
...