mirror of https://github.com/M66B/FairEmail.git
Added support for RFC 8314
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0666eb9011
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@ -524,7 +524,7 @@ public class EmailProvider {
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provider.imap.host = records[0].name;
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provider.imap.port = records[0].port;
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provider.imap.starttls = false;
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} catch (UnknownHostException ex) {
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} catch (UnknownHostException ignored) {
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// Identifies an IMAP server that MAY ... require the MUA to use the "STARTTLS" command
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DnsHelper.DnsRecord[] records = DnsHelper.lookup(context, "_imap._tcp." + domain, "srv");
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if (records.length == 0)
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@ -535,7 +535,8 @@ public class EmailProvider {
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}
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}
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if (discover == Discover.ALL || discover == Discover.SMTP) {
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if (discover == Discover.ALL || discover == Discover.SMTP)
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try {
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// Note that this covers connections both with and without Transport Layer Security (TLS)
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DnsHelper.DnsRecord[] records = DnsHelper.lookup(context, "_submission._tcp." + domain, "srv");
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if (records.length == 0)
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@ -543,6 +544,14 @@ public class EmailProvider {
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provider.smtp.host = records[0].name;
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provider.smtp.port = records[0].port;
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provider.smtp.starttls = (provider.smtp.port == 587);
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} catch (UnknownHostException ignored) {
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// https://tools.ietf.org/html/rfc8314
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DnsHelper.DnsRecord[] records = DnsHelper.lookup(context, "_submissions._tcp." + domain, "srv");
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if (records.length == 0)
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throw new UnknownHostException(domain);
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provider.smtp.host = records[0].name;
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provider.smtp.port = records[0].port;
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provider.smtp.starttls = false;
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}
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provider.validate();
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