Port discovery and message delivery in a portable electronic device

• US 8,539,093 B2
• Filed: 12/31/2007
• Issued: 09/17/2013
• Est. Priority Date: 06/29/2007
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: Forstall, Scott, Ganatra, Nitin K., Keen, Dan
• Primary Examiner(s): JEAN GILLES, JUDE
• Application Number:
  US11/968,076
• Publication Number:
  US 20090006644A1
• Time in Patent Office: 2,087 Days
• Field of Search: 709/232, 709/206, 709/220, 709/203, 709/224, 709/227, 709/228, 709/226, 709/225
• US Class Current: 709/232
• CPC Class Codes: H04L 51/58 Message adaptation for wireless communication
• CPC Class Codes: H04L 63/164 at the network layer
• CPC Class Codes: H04W 12/102 Route integrity, e.g. using trusted paths
• CPC Class Codes: H04W 12/37 Managing security policies for mobile devices or for controlling mobile applications

Abstract

In accordance with some embodiments, a computer-implemented method for fetching email from an email server to a portable electronic device is disclosed. The method includes, at a portable electronic device configured with an email client: (1) when creating an email account on the portable electronic device: (a) attempting to connect to an outbound email server using a first port/security combination according to a first preferred sequence of port/security combinations; (b) if connection is made using the first port/security combination, storing the first port/security combination as a stored configuration for the email account; (c) if connection is not made using the first port/security combination, repeating (1)(a) for different port/security combinations according to the preferred sequence until connection is made with a second port/security combination; and (d) storing the second port/security combination as the stored configuration; and (2) subsequently employing the stored configuration to connect to and send email via the outbound email server.

Claims

1. A computer-implemented method, comprising:

at a portable electronic device configured with an email client;

(1) when creating an email account on the portable electronic device;

(a) attempting to connect to an outbound email server using a first port/security combination according to a first preferred sequence of port/security combinations;

(b) if connection is made using the first port/security combination, storing the first port/security combination as a stored configuration for the email account;

(c) if connection is not made using the first port/security combination, repeatedly attempting to connect to the outbound email server using second port/security combinations distinct from the first port/security combination according to the first preferred sequence until connection is made with a particular second port/security combination; and

(d) storing the particular second port/security combination as the stored configuration; and

(2) subsequently employing the stored configuration to connect to and send email via the outbound email server.

2. The computer-implemented method of claim 1, wherein attempting to connect to the outbound email server comprises connecting to a network between the portable device and the outbound email server and initiating a session on the email server.

3. The computer-implemented method of claim 2, wherein initiating an email session comprises at least one of:

logging-in to the email server or confirming that the email server is an SMTP email server.

4. The computer-implemented method of claim 1, wherein the first preferred sequence of port/security combinations comprise a plurality of combinations of predefined port numbers and security settings associated with SMTP email servers.

5. The computer-implemented method of claim 1, wherein the first preferred sequence is arranged from highest to lowest security strength.

6. The computer-implemented method of claim 1, wherein the first preferred sequence of port/securing setting comprises:

1. 587/SSL,

2. 587/STARTTLS,

3. 25/SSL,

4. 25/STARTTLS,

5.465/SSL,

6. 465/STARTTLS,

7. 587/no SSL or STARTTLS,

8. 25/no SSL or STARTTLS,

9. 465/no SSL or STARTTLS.

7. The method of claim 1, further comprising:

(3) when the portable device cannot subsequently connect to the outbound email server using the stored configuration;

(a) attempting to connect to the outbound email server using a first fallback port/security combination according to a fallback sequence of port/security combinations that is different from the first preferred sequence, wherein the first fallback port/security combination is different from the stored configuration;

(b) upon determining that connection is made using the first fallback port/security combination, employing the first fallback port/security combination to send email via the outbound email server;

(c) upon determining that connection is not made using the first fallback port/security combination, attempting to connect to the outbound email server using second fallback port/security combinations distinct from the first fallback port/security combination according to the fallback sequence until connection is made with a particular second fallback port/security combination that is different from the stored configuration; and

(d) employing the particular second fallback port/security combination to send email via the outbound email server.

8. The method of claim 7, further comprising:

upon determining that a connection is not made to the outbound email server via either of (2) or (3), suspending an attempt to send email via the outbound email server.

9. The method of claim 7, wherein the fallback sequence comprises a reordering of the first preferred sequence such that an account configured for email communications using a secure port/security combination does not fallback to a less secure port/security combination.

10. The method of claim 9, wherein the fallback sequence is further configured such that either of the first or second fallback port/security combinations have less security strength than the stored configuration.

11. The method of claim 7, further comprising storing the fallback sequence.

12. The method of claim 7, further comprising, storing a plurality of fallback sequences, each fallback sequence corresponding to at least one of the port/security combinations in the first preferred sequence.

13. The method of claim 7, wherein the fallback sequence comprises:

1. 587/no SSL or STARTTLS,

2. 25/no SSL or STARTTLS,

3. 465/no SSL or STARTTLS,

4. 587/SSL,

5. 587/STARTTLS,

6.25/SSL,

7. 25/STARTTLS,

8.465/SSL,

9.465/STARTTLS.

14. A portable computing device, comprising:

a display;

one or more processors;

memory; and

one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including;

an email application; and

instructions for setting ports and security level for an email account, comprising;

(1) when creating an email account on the portable electronic device;

(a) attempting to connect to an outbound email server using a first port/security combination according to a first preferred sequence of port/security combinations;

(b) if connection is made using the first port/security combination, storing the first port/security combination as a stored configuration for the email account;

(c) if connection is not made using the first port/security combination, repeatedly attempting to connect to the outbound email server using second port/security combinations distinct from the first port/security combination according to the first preferred sequence until connection is made with a particular second port/security combination; and

(d) storing the particular second port/security combination as the stored configuration; and

(2) subsequently employing the stored configuration to connect to and send email via the outbound email server.

17. The portable computing device of claim 14, wherein the first preferred sequence is arranged from highest to lowest security strength.

18. The portable computing device of claim 14, the instructions for setting ports and security level for an email account further comprising:

(3) when the portable device cannot subsequently connect to the outbound email server using the stored configuration;

(a) attempting to connect to the outbound email server using a first fallback port/security combination according to a fallback sequence of port/security combinations that is different from the first preferred sequence, wherein the first fallback port/security combination is different from the stored configuration;

(b) upon determining that connection is made using the first fallback port/security combination, employing the first fallback port/security combination to send email via the outbound email server;

(c) upon determining that connection is not made using the first fallback port/security combination, attempting to connect to the outbound email server using second fallback port/security combinations distinct from the first fallback port/security combination according to the fallback sequence until connection is made with a particular second fallback port/security combination that is different from the stored configuration; and

(d) employing the particular second fallback port/security combination to send email via the outbound email server.

15. A computer readable non-transitory storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a portable computing device with an email client, cause the device to perform the following:

(1) when creating an email account on the portable electronic device;

(a) attempt to connect to an outbound email server using a first port/security combination according to a first preferred sequence of port/security combinations;

(b) if connection is made using the first port/security combination, store the first port/security combination as a stored configuration for the email account;

(c) if connection is not made using the first port/security combination, repeatedly attempt to connect to the outbound email server using second port/security combinations distinct from the first port/security combination according to the first preferred sequence until connection is made with a particular second port/security combination; and

(d) store the particular second port/security combination as the stored configuration; and

(2) subsequently employ the stored configuration to connect to and send email via the outbound email server.

19. The computer readable non-transitory storage medium of claim 15, wherein the one or more programs comprising instructions, which when executed by the portable computing device with the email client, further cause the device to perform the following:

(3) when the portable device cannot subsequently connect to the outbound email server using the stored configuration;

(a) attempting to connect to the outbound email server using a first fallback port/security combination according to a fallback sequence of port/security combinations that is different from the first preferred sequence, wherein the first fallback port/security combination is different from the stored configuration;

(b) upon determining that connection is made using the first fallback port/security combination, employing the first fallback port/security combination to send email via the outbound email server;

(c) upon determining that connection is not made using the first fallback port/security combination, attempting to connect to the outbound email server using second fallback port/security combinations distinct from the first fallback port/security combination according to the fallback sequence until connection is made with a particular second fallback port/security combination that is different from the stored configuration; and

(d) employing the particular second fallback port/security combination to send email via the outbound email server.

20. The computer readable non-transitory storage medium of claim 19, wherein the fallback sequence comprises a reordering of the first preferred sequence such that an account configured for email communications using a secure port/security combination does not fallback to a less secure port/security combination.

16. A portable electronic device with a touch screen display and an email client, comprising means for:

(1) when creating an email account on the portable electronic device;

(a) attempting to connect to an outbound email server using a first port/security combination according to a first preferred sequence of port/security combinations;

(b) if connection is made using the first port/security combination, storing the first port/security combination as a stored configuration for the email account;

(c) if connection is not made using the first port/security combination, repeatedly attempting to connect to the outbound email server using second port/security combinations distinct from the first port/security combination according to the first preferred sequence until connection is made with a particular second port/security combination; and

(d) storing the particular second port/security combination as the stored configuration; and

(2) subsequently employing the stored configuration to connect to and send email via the outbound email server.