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docs: update sendmail docs to use more secure SMTP server for Gmail

Earlier recommendation by IETF with RFC 2595 was to deprecate
implicit TLS in preference for upgrade an initially unencrypted
connection with STARTTLS command. These days, however, IETF
recommends that connections be made using "Implicit TLS", in
preference to STARTTLS and the like, completely reversing their
earlier position, in RFC8314.

Update the GMail example to use the implicit TLS to match the
current recommendation at port 465.

Signed-off-by: Aditya Garg <gargaditya08@live.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

authored by

Aditya Garg and committed by
Junio C Hamano fafc9b08 c44beea4

+4 -4
unified split
+4 -4
Documentation/git-send-email.adoc
··· 521 521 522 522 ---- 523 523 [sendemail] 524 - smtpEncryption = tls 524 + smtpEncryption = ssl 525 525 smtpServer = smtp.gmail.com 526 526 smtpUser = yourname@gmail.com 527 - smtpServerPort = 587 527 + smtpServerPort = 465 528 528 ---- 529 529 530 530 Gmail does not allow using your regular password for `git send-email`. ··· 542 542 543 543 ---- 544 544 [sendemail] 545 - smtpEncryption = tls 545 + smtpEncryption = ssl 546 546 smtpServer = smtp.gmail.com 547 547 smtpUser = yourname@gmail.com 548 - smtpServerPort = 587 548 + smtpServerPort = 465 549 549 smtpAuth = OAUTHBEARER 550 550 ---- 551 551