Ruby API
v2.7
3.4
3.3
3.2
3.1
3.0
2.7
2.6
2.5
2.4
2.3
dev
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Ruby API
v2.7
3.4
3.3
3.2
3.1
3.0
2.7
2.6
2.5
2.4
2.3
dev
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System
Parent
ProtoUnknownError
Included Modules
SMTPError
Type Signatures
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Parent
ProtoUnknownError
Included Modules
SMTPError
Net::SMTPUnknownError
Class
Unexpected reply code returned from server.