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fix #2142

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Allow specifying TCP4 or TCP6 for outgoing email sending, or choosing a
specific local address to send from.
This commit is contained in:
Shivaram Lingamneni 2024-04-07 15:09:51 -04:00
parent 1f4b5248a0
commit b426dd8f93
4 changed files with 38 additions and 7 deletions
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24
irc/email/email.go
View file

@ -75,6 +75,9 @@ type MailtoConfig struct {
Sender string
HeloDomain string `yaml:"helo-domain"`
RequireTLS bool `yaml:"require-tls"`
Protocol string `yaml:"protocol"`
LocalAddress string `yaml:"local-address"`
localAddress net.Addr
VerifyMessageSubject string `yaml:"verify-message-subject"`
DKIM DKIMConfig
MTAReal MTAConfig `yaml:"mta"`
@ -159,6 +162,25 @@ func (config *MailtoConfig) Postprocess(heloDomain string) (err error) {
}
}
config.Protocol = strings.ToLower(config.Protocol)
if config.Protocol == "" {
config.Protocol = "tcp"
}
if !(config.Protocol == "tcp" || config.Protocol == "tcp4" || config.Protocol == "tcp6") {
return fmt.Errorf("Invalid protocol for email sending: `%s`", config.Protocol)
}
if config.LocalAddress != "" {
ipAddr := net.ParseIP(config.LocalAddress)
if ipAddr == nil {
return fmt.Errorf("Could not parse local-address for email sending: `%s`", config.LocalAddress)
}
config.localAddress = &net.TCPAddr{
IP: ipAddr,
Port: 0,
}
}
if config.MTAConfig.Server != "" {
// smarthost, nothing more to validate
return nil
@ -241,6 +263,6 @@ func SendMail(config MailtoConfig, recipient string, msg []byte) (err error) {
return smtp.SendMail(
addr, auth, config.HeloDomain, config.Sender, []string{recipient}, msg,
config.RequireTLS, implicitTLS, config.Timeout,
config.RequireTLS, implicitTLS, config.Protocol, config.localAddress, config.Timeout,
)
}