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Security valuable trouble

Status: Open.

#3305 In PHPMailer/PHPMailer;

· animer3009 opened on Mar 2, 2026

Get_Oauth_Token.php fails with Error 500

Status: Open.

#3300 In PHPMailer/PHPMailer;

· galexmay opened on Feb 17, 2026

How to know which error occurred

Status: Open.

#3171 In PHPMailer/PHPMailer;

· SuheylZ opened on Jun 19, 2025

Improve Exception message on SMTP Authentication failure

Status: Open.

#3161 In PHPMailer/PHPMailer;

· lm-cmxkonzepte opened on May 12, 2025

PHPMailer OAuth2 Example with <code>league/oauth2-google</code> Fails Due to Invalid Scopes for Gmail API

Status: Open.

#3131 In PHPMailer/PHPMailer;

· InTheNooB opened on Feb 4, 2025

Headers of signed S/Mime email is not well formated

Status: Open.

#3078 In PHPMailer/PHPMailer;

· panoma-berlin opened on Jul 26, 2024

550 5.6.11 SMTPSEND.BareLinefeedsAreIllegal; message contains bare linefeeds, which cannot be sent via DATA and receiving system does not support BDAT

Status: Open.

#3067 In PHPMailer/PHPMailer;

· JiriSch opened on Jun 25, 2024

sigterm when in DATA state causes QUIT to fail

Status: Open.

#2994 In PHPMailer/PHPMailer;

· Stevehans opened on Dec 12, 2023

Website registration verification email is rejected by gmail

Status: Open.

#2843 In PHPMailer/PHPMailer;

· kootrya opened on Dec 12, 2022

Address header not folded with large number of recipients

Status: Open.

#2690 In PHPMailer/PHPMailer;

· Centridox opened on Jun 2, 2022

RecipientsQueue is not included in getToAddresses

Status: Open.

#2565 In PHPMailer/PHPMailer;

· frankforte opened on Nov 24, 2021

MIME headers aren't encoded properly when using ISO-2022-JP (7bit) CharSet

Status: Open.

#2185 In PHPMailer/PHPMailer;

· koseki opened on Oct 31, 2020