Rspamd log missed dots in email address

[VolFestion]

Classification (Please choose one option):

• Crash/Hang/Data loss
• WebUI/Usability
• Serious bug
• Ordinary bug
• Feature
• Enhancement

Reproducibility (Please choose one option):

• Always
• Sometimes
• Rarely
• Unable
• I didn’t try
• Not applicable

Rspamd version:

1.8.0, 1.7.4

Operation system, CPU:

Ubuntu 18.04.1 LTS

Description (Please provide a descriptive summary of the issue):

Sender email is irina.dq.drozdova@gmail.com, but rspamd log contains irinadqdrozdova@gmail.com

Postfix log:
Oct 1 18:43:56 relay0 postfix/smtpd[28946]: 75CCB14264E: client=mail-ot1-f67.google.com[209.85.210.67]
Oct 1 18:43:56 relay0 postfix/cleanup[28947]: 75CCB14264E: message-id=CAKK1m5dkHEMbw45j_QYP3z6dENec+ynKXm3oJqW5AR6_+zuqaA@mail.gmail.com
Oct 1 18:43:56 relay0 postfix/qmgr[47801]: 75CCB14264E: from=irina.dq.drozdova@gmail.com, size=2635, nrcpt=1 (queue active)
Oct 1 18:43:57 relay0 postfix/smtp[28953]: 75CCB14264E: to=test-201815@domain.ru, relay=192.168.12.34[192.168.12.34]:25, delay=0.67, delays=0.52/0.01/0/0.13, dsn=2.6.0, status=sent (250 2.6.0 CAKK1m5dkHEMbw45j_QYP3z6dENec+ynKXm3oJqW5AR6_+zuqaA@mail.gmail.com [InternalId=94424856003072, Hostname=SRV1.domain.ru] Queued mail for delivery)
Oct 1 18:43:57 relay0 postfix/qmgr[47801]: 75CCB14264E: removed

Rspamd log:
2018-10-01 18:43:56 #6382(normal) ; task; rspamd_task_write_log: id: CAKK1m5dkHEMbw45j_QYP3z6dENec+ynKXm3oJqW5AR6_+zuqaA@mail.gmail.com, qid: <75CCB14264E>, ip: 209.85.210.67, from: irinadqdrozdova@gmail.com, (default: F (no action): [-0.15/6.00] [UNPRECISE_RCPT_DETAIL_FROM_SPAMMY(0.50){},DMARC_POLICY_ALLOW(-0.25){gmail.com;none;},R_DKIM_ALLOW(-0.20){gmail.com;},R_SPF_ALLOW(-0.20){+ip4:209.85.128.0/17;},MIME_GOOD(-0.10){multipart/alternative;text/plain;},RCVD_NO_TLS_LAST(0.10){},ARC_NA(0.00){},ASN(0.00){asn:15169, ipnet:209.85.128.0/17, country:US;},DKIM_TRACE(0.00){gmail.com:+;},FREEMAIL_ENVFROM(0.00){gmail.com;},FROM_EQ_ENVFROM(0.00){},PREVIOUSLY_DELIVERED(0.00){test-201815@domain.ru ;},RCPT_COUNT_ONE(0.00){1;},RCVD_COUNT_TWO(0.00){2;},RCVD_IN_DNSWL_NONE(0.00){67.210.85.209.list.dnswl.org : 127.0.5.0;},RWL_MAILSPIKE_GOOD(0.00){67.210.85.209.rep.mailspike.net : 127.0.0.18;},TAGGED_FROM(0.00){},TO_MATCH_ENVRCPT_ALL(0.00){}]), len: 2362, time: 248.450ms real, 21.116ms virtual, dns req: 20, digest: <7b088c597d322e963fc2983fd3536101>, rcpts: test-201815@domain.ru, mime_rcpt: test-201815@domain.ru, subject: Test (1) from dot

Compile errors (if any):

Relevant logs (see details here):

Expected results:

True email address irina.dq.drozdova@gmail.com

Actual results:

Wrong email address irinadqdrozdova@gmail.com

Debugging information (see details here):

Configuration (e.g. rspamadm configdump module):

Additional information:

[vstakhov]

Rspamd behaves exactly as gmail does: https://support.google.com/mail/answer/7436150?hl=en