def normalize_email_address(email: str) -> NormalizedEmailAddress:
"""Normalize an email address.
Returns a `NormalizedEmailAddress` object.
Raises:
BadEmailAddress: if the address is syntactically unacceptable
InvalidEmailDomain: if the domain name is syntactically invalid
"""
# Remove any surrounding whitespace
email = email.strip()
# Split the address
try:
local_part, domain = email.rsplit('@', 1)
except ValueError:
raise BadEmailAddress(email)
# Lowercase and encode the domain name
try:
domain = domain.lower().encode('idna').decode()
except UnicodeError as e:
raise InvalidEmailDomain(email, domain, e)
# Check the syntax and length of the address
email = local_part + '@' + domain
if not EMAIL_RE.match(email) or len(email) > 320:
# The length limit is from https://tools.ietf.org/html/rfc3696#section-3
raise BadEmailAddress(email)
return str.__new__(NormalizedEmailAddress, email)
def normalize_email_address(email):
"""Normalize an email address.
Returns:
str: the normalized email address
Raises:
BadEmailAddress: if the address appears to be invalid
BadEmailDomain: if the domain name is invalid
"""
# Remove any surrounding whitespace
email = email.strip()
# Split the address
try:
local_part, domain = email.rsplit('@', 1)
except ValueError:
raise BadEmailAddress(email)
# Lowercase and encode the domain name
try:
domain = domain.lower().encode('idna').decode()
except UnicodeError:
raise BadEmailDomain(domain)
# Check the syntax and length of the address
email = local_part + '@' + domain
if not EMAIL_RE.match(email) or len(email) > 320:
# The length limit is from https://tools.ietf.org/html/rfc3696#section-3
raise BadEmailAddress(email)
# Check that the domain has at least one MX record
if website.app_conf.check_email_domains:
try:
DNS.query(domain, 'MX')
except DNSException:
raise BadEmailDomain(domain)
except Exception as e:
website.tell_sentry(e, {})
return email